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• Male, 21 Years
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## Rishi

Associated for 3 Years 2 Months
i will deliever my best .....
• Qualification:
B.tech
• Experience:
I have got 10 cgpa in 10th exam and 90.2 % in 12th board , i think it's enough to teach a student who is currently studying in 5-10 standard . Also i have just done it , so i also have knowledge about current curriculum and al... More [+]
• Teaches:
Mathematics, Chemistry
• Board:
CBSE
• Areas:
• Pincode:
110001
Profile Details

#### Qualification :

B.tech

I have got 10 cgpa in 10th exam and 90.2 % in 12th board , i think it's enough to teach a student who is currently studying in 5-10 standard . Also i have just done it , so i also have knowledge about current curriculum and all that stuff..

#### Tutoring Option:

Home Tuition Only

#### Tutoring Approach:

It's mu first experience as a tutor so i will try my best to deliever all my knowledge ..

#### Hourly Fees [INR]:

400.00

 Class 9 - 10 Chemistry, CBSE INR 500.00 /hour Class 6 - 8 Mathematics, CBSE INR 400.00 /hour
• ## Question: What are the balanced chemical equations for the reactions taking place when dry...

Posted in: Chemistry | Date: 22/05/2016

CuSO4.5H2O +conc.H2SO4(aq)   -->   CuSO4(s) +SO2(g) +H2O(l)

• ## Question: Where did all the water on earth come from?

Posted in: Geography,Geography,Geography,Geography | Date: 22/05/2016

To be fair, None of the details explained where the water came from . few say , the comet and asteroid  are the main reasons .

• ## Question: if i get no admission in iit which college is best for engineering?

Posted in: Actuarial Science,Computer Science | Date: 22/05/2016

NIT'sand BITS Pilani

• ## Question: What was the First organic cell

Posted in: Biology,Biology,Biology,Bio Chemistry,Bio Technology,Chemistry,Chemistry,Chemistry,Chemistry,Chemistry,Chemical | Date: 22/05/2016

Blue Green Algae

• ## Question: What is linux and why it is deffer from ms OS?

Posted in: Computer Hardware,Unix/Linux | Date: 22/05/2016

Linux is an open source operating system which is more cost effective and secure  while ms OS is a closed source operating system

• ## Question: What is the fermentation process?

Posted in: Chemistry | Date: 22/05/2016

The process  by which sugar gets converted to alcohol is called fermentation process.

• ## Question: How is infinity concept understood in Mathematics

Posted in: Mathematics,Mathematics,Mathematics,Mathematics,Mathematics | Date: 22/05/2016

Very big number which we cannot count . Any number when divided by zero gives infinity.

• ## Question: Why aluminium does not corrode like iron?

Posted in: Physics | Date: 22/05/2016

a thin protective layer, known as aluminum oxide (Al2O3), forms on the metal's surface and acts like a  rust-resistant shield.

• ## Question: How does the strength of the magnetic field at the centre of a circular coil of ...

Posted in: Physics | Date: 22/05/2016

as we increase the radius of the coil , it's magnetic field at the centre reduces .

• ## Question: What are the advantages and limitations of solar cookers?

Posted in: Physics | Date: 22/05/2016

They are eco friendly and renewable source of energy while it cannot be used during cloudy weather and are also costly .

• ## Question: What is meant by corrosion of iron?

Posted in: Physics | Date: 22/05/2016

When iron metal is exposed to oxygen and water,  it gets corroded because the surface layer gets oxidised in presence of moisture. it results inrusting of iron and the process is called corrosion

• ## Question: How is corrosion of iron prevented by coating i with a layer of oil?

Posted in: Physics | Date: 22/05/2016

By coating iron with oil it basically creates an interphase betwwen atnosphere and iron surface preventing it from corrosion .

• ## Question: How does the strength of the magnetic field at the centre of a circular coil of ...

Posted in: Physics | Date: 22/05/2016

with increase in number of turns of wire in the coil , strength of magnetic field at the centre of the circular coil increases

• ## Question: What is safety glass?

Posted in: Chemistry | Date: 22/05/2016

Safety glass is glass with additional safety features that make it less likely to break.

• ## Question: What are the uses of optical glass fibres?

Posted in: Chemistry | Date: 22/05/2016

In communication,SONAR,Industrial Purpose, medical science  and Aerospace

• ## Question: What are the uses of pyrex glass?

Posted in: Chemistry | Date: 22/05/2016

glasses used in thermometers , cooking applications and laboratory equipments are generally Pyrex Glass.

• ## Question: What is the formation of condensation polymers?

Posted in: Chemistry | Date: 22/05/2016

Monomers containing two or more functional groups combine to form polymers with removal of small bi-products , the polymers formed are called condensation polymers .

• ## Question: What is the formation of addition polymers?

Posted in: Chemistry | Date: 22/05/2016

Monomers  combine to form polymers without formation of any bi-products , the polymers formed are called condensation polymers .

• ## Question: What are shooting starts called if they reach the surface of the earth?

Posted in: Physics | Date: 22/05/2016

Meteorite

• ## Question: How do shooting starts acquire brightness?

Posted in: Physics | Date: 22/05/2016

due to air friction offered by the atmospheric gases .

• ## Question: What is meant by the term "shooting starts"?

Posted in: Physics | Date: 22/05/2016

Meteorite are basically shooting stars .

• ## Question: Why the use of dry wood as domestic fuel is not considered as good?

Posted in: Chemistry | Date: 22/05/2016

because the products of combustion of dry wood gives out harmfull gases which cause pollution and global warming .

• ## Question: What is the name and the chemical formula of the organic acid present in vinegar...

Posted in: Chemistry | Date: 22/05/2016

Ethanoic Acid , CH3COOH , also known as Acetic Acid .

• ## Question: What is the ore of zinc other than zinc oxide?

Posted in: Chemistry | Date: 22/05/2016

Sphalerite (ZnS) also known as Zinc Blend .

• ## Question: What will be the focal length of a lens whose power is given as + 2.0 D?

Posted in: Physics | Date: 22/05/2016

50 cm

• ## Question: What is the effect of the urinary bladder in our body?

Posted in: Biology | Date: 22/05/2016

it is a expandable muscular part of our body that stores urine ..

• ## Question: What are the differences between 'concrete cement' and 'reinforced concrete ceme...

Posted in: Chemistry | Date: 22/05/2016

In case of reinforced concrete cement , steel is embedded in to the concrete,  tensile and compressive strength is taken.

while in Concrete cement , no steel reinforcement is embedded and only compressive strength is taken

• ## Question: What are the characteristics of Jovian planets?

Posted in: Physics | Date: 22/05/2016

Jovian planets are also known as gas giants. They do not have rocky substace and are composed mainly of hydrogen and helium and other organic gases .

• ## Question: How can we locate the Pole Star in the sky at night?

Posted in: Physics | Date: 22/05/2016

using Saptarishi Mandala or Big Dipper

• ## Question: Which functional group present in the compound CH3NH2?

Posted in: Chemistry | Date: 22/05/2016

primary amine group

• ## Question: what is modulation?why is it necessarily needed? name the four methods of modula...

Posted in: Physics | Date: 22/05/2016

Low frequency signals are not transported easily over large distance so , to solve this problem modulation of this wave over high frequency carrier wave is done to improve the signal quality and speed of operation . this process is called Modulation . mplitude modulation, frequency modulation, phase modulation, digital modulation are the different type of modulations .

• ## Question: Who first proposed the theory of inheritance of acquired characters?

Posted in: Biology | Date: 22/05/2016

Jean-Baptiste Lamarck

• ## Question: Why non-metals in general do not displace hydrogen from dilute acids?

Posted in: Chemistry | Date: 22/05/2016

because of their tendency to gain electrons

• ## Question: Why zinc oxide is considered an amphoteric oxide?

Posted in: Chemistry | Date: 22/05/2016

amphoteric oxide are those which can rect with both acids and bases , zinc oxide reacts with both of them therefore it's considered n amphoteric acid .

• ## Question: What are the chemical equations for reactions taking place when calcium metal re...

Posted in: Chemistry | Date: 22/05/2016

Ca + 2H2O = Ca(OH)2 + H2

calcium hydroxide is formed and H2 is liberated .

• ## Question: What are the chemical equations for reactions taking place when concentrated sul...

Posted in: Chemistry | Date: 22/05/2016

S + 2 H2SO4 -----------> 3SO2 + 2 H2O

sulphur dioxide gas evolved

• ## Question: What are the chemical equations for reactions taking place when cinnabar is heat...

Posted in: Chemistry | Date: 22/05/2016

2HgS + 2O2 = Hg2 + 2SO2

sulphur dioxide gas evolved

• ## Question: What is the chemical equation for the reaction involved in 'slaking of lime'?

Posted in: Chemistry | Date: 22/05/2016

Ca + H2O -----> Ca(OH)2 + H2

• ## Question: What does 'slaking of lime' stand for?

Posted in: Chemistry | Date: 22/05/2016

Ca + H2O = Ca(OH)2

• ## Question: What is the corona of the Sun and when can it be seen?

Posted in: Physics | Date: 22/05/2016

Corona is the outer most layer of the sun temperature of millions degree .it  is most easily seen during a total solar eclipse, but it is also observable with a coronagraph.

• ## Question: What is meant by the photosphere of our Sun?

Posted in: Physics | Date: 22/05/2016

The outer visible surface of sun is called photosphere .

• ## Question: Which planet in the Solar System that has the greatest number of moons?

Posted in: Physics | Date: 22/05/2016

Jupiter

• ## Question: What is the function of epiglottis in man?

Posted in: Biology | Date: 22/05/2016

The function of the epiglottis is to prevent food and drink from falling down the airway, they are situated next to each other in the throat

• ## Question: What is the function of gizzard in a grasshopper?

Posted in: Biology | Date: 22/05/2016

Gizzard breaks down food stuffs into smaler pieces and helps grasshopper to digest food .

• ## Question: What is potable water?

Posted in: Biology | Date: 22/05/2016

drink-able water

• ## Question: Which structure in a neuron helps to conduct a nerve impulse away from the cell ...

Posted in: Biology | Date: 22/05/2016

axon's end terminal

• ## Question: Which structure in a neuron helps to conduct a nerve impulse towards the cell bo...

Posted in: Biology | Date: 22/05/2016

Dendrites

• ## Question: What is 'nerve impulse'?

Posted in: Biology | Date: 22/05/2016

A nerve impulse is an electrical signal that travels along an axon or dendrites due to potential difference

• ## Question: What are the practices that can help in the protection of our environment?

Posted in: Biology | Date: 22/05/2016

Planting trees , Rain Water Harvesting ,  using pollution free vehicles are few steps which will improve our environment

• ## Question: What are the excretory units present in an earthworm?

Posted in: Biology | Date: 22/05/2016

Nephredia

• ## Question: What is the hindrance in developing wind power and power of water flow?

Posted in: Physics | Date: 22/05/2016

Developing wind power requires large open area and proper wind flow in that area , while in case of developing power with water , rivers with water availability all year long and land near it are rare to find , it has environmental issues also .

• ## Question: What are the comparisons of wind power and power of water flow in respect of gen...

Posted in: Physics | Date: 22/05/2016

power of water flow is higher than that of wind power for same flow rate as density of water is higher than air .

• ## Question: Which part of India where wind energy is commercially harnessed?

Posted in: Physics | Date: 22/05/2016

Tamilnadu, Maharashtra, Gujarat, Rajasthan, Madhya pardesh, Kerala, Odisha, West Bengal and Jammu and Kashmir

• ## Question: What is the main basic Cause for winds to blow?

Posted in: Physics | Date: 22/05/2016

Pressure difference is the basic cause for winds to blow .

• ## Question: On what principle does a solar water heater operate?

Posted in: Physics | Date: 22/05/2016

on the principle of conversion of solar or light energy into heat energy .

• ## Question: In what property is bronze different from its main constituent?

Posted in: Chemistry | Date: 22/05/2016

electrical conductivity of bronze isless than from its main constituent ( Cu).

• ## Question: In what property is stainless steel different from its main constituent?

Posted in: Chemistry | Date: 22/05/2016

stainless steel is corrosion resistant .

• ## Question: What are the main constituents of the bronze?

Posted in: Chemistry | Date: 22/05/2016

Copper and Tin

• ## Question: What are the main constituents of the stainless steel?

Posted in: Chemistry | Date: 22/05/2016

Chromium,Nickel and Iron .

• ## Question: What is an amalgam?

Posted in: Chemistry | Date: 22/05/2016

An amalgam is an alloy of mercury with another metal .

• ## Question: What is an alloy?

Posted in: Chemistry | Date: 22/05/2016

Alloy is homogenous mixture of two or more metallic elements made to get better properties .

• ## Question: Why are carbon and limestone mixed with the iron ore before feeding it into the ...

Posted in: Chemistry | Date: 22/05/2016

to seperate impurity and get pure iron .

• ## Question: What are the common compound forms in which iron occurs?

Posted in: Chemistry | Date: 22/05/2016

Hematite , Magnetite , Limonite and Siderite .

• ## Question: What is Faraday’s constant for electrolytic reactions?

Posted in: Physics | Date: 24/05/2016

The charge of 1 mole of electrons is called Faraday's constant.

• ## Question: Which chemical equations for reactions taking place when SO2 gas and H2S gas are...

Posted in: Chemistry | Date: 24/05/2016

SO2+ 2H2S = 2H2O + 3S

• ## Question: Which chemical equations for reactions taking place when ammonia gas is passed o...

Posted in: Chemistry | Date: 24/05/2016

3CuO + 2NH3(g) ----> 3Cu(s) + N2(g) + 3H2O(l)

• ## Question: Which chemical equations for reactions taking place when zinc carbonate is calci...

Posted in: Chemistry | Date: 24/05/2016

ZnCO3 → ZnO + CO2(g).

• ## Question: Why carbon is not used for making aluminium from aluminium oxide?

Posted in: Chemistry | Date: 24/05/2016

Al2O3 is highly stable so , its expensive to use carbon.

• ## Question: Which type of polymer is applicable for blending with cotton to make shrink-resi...

Posted in: Chemistry | Date: 24/05/2016

Synthetic polymer mainly polyester or Teflon

• ## Question: Which type of polymer is applicable for non-stick coatings on kitchen utensils?

Posted in: Chemistry | Date: 24/05/2016

Teflon

• ## Question: Which type of polymer is applicable for insulating electric wires?

Posted in: Chemistry | Date: 24/05/2016

High density polymers are used

• ## Question: How have polymers been classified?

Posted in: Chemistry | Date: 24/05/2016

Natural polymer and synthetic polymer Thermoplastic and Thermosetting polymers. Addition polymer and condensation polymer

• ## Question: What is a polymer?

Posted in: Chemistry | Date: 24/05/2016

A polymer is a large molecule, composed of many repeated monomer units

• ## Question: What change has been made in the composition of detergents to make them biodegra...

Posted in: Chemistry | Date: 24/05/2016

Long chains present in detergent should be made of hydrocarbons as they are biodegradable

• ## Question: Which type of orbit is suitable for a geostationary satellite?

Posted in: Physics | Date: 24/05/2016

Equatorial orbit as it moves with same speed at which earth rotates.

• ## Question: What are the differences between a natural satellite and an artificial satellite...

Posted in: Physics | Date: 24/05/2016

Natural satellites are formed by nature like moon while Artificial satellites are man made like communication satellites

• ## Question: Why is our galaxy called Milky Way?

Posted in: Physics | Date: 24/05/2016

Large no. of stars present in our galaxy emit light as a result it looks milky .

• ## Question: How does formalin react with Tollen’s reagent?

Posted in: Chemistry | Date: 25/05/2016

2 [Ag(NH3)2]+ + HCHO + H2O → (Tollen's reagent) 2Ag(s) + 4 NH3 + HCOOH + 2 H+

• ## Question: What is formalin?

Posted in: Chemistry | Date: 25/05/2016

Colourless solution of formaldehyde in water is formalin.

• ## Question: How is chloride of lime chemically different from calcium chloride?

Posted in: Chemistry | Date: 25/05/2016

Chloride of lime is highly alkaline while calcium chloride is neutral.

• ## Question: Which two other planets of the Solar System are similar to the Earth in composit...

Posted in: Physics | Date: 25/05/2016

Mars and Venus

• ## Question: Which non-metal and metal are in liquid state at room temperature?

Posted in: Chemistry | Date: 25/05/2016

Non - metal : bromine Metal: mercury

• ## Question: How are the molecules of aldehydes and ketones structurally different?

Posted in: Chemistry | Date: 25/05/2016

Aldehyde is RCOH but ketone is RCOR

• ## Question: How is the rate of reaction influenced by raising the temperature of reactants?

Posted in: Chemistry | Date: 25/05/2016

Increases with increase in temperature.

• ## Question: Which chamber of the human heart receives deoxygenated blood?

Posted in: Biology | Date: 25/05/2016

Right atrium

• ## Question: What methods are used for growing jasmine and rose plants?

Posted in: Biology | Date: 25/05/2016

Layering method for jasmine and stem cutting method for rose

• ## Question: How the removal of vegetation can lead to soil erosion?

Posted in: Biology | Date: 25/05/2016

Vegetation holds the top layer of soil and prevents it from erosion .In case of removal of vegetation , top soil can easily be eroded by wind and flowing water.

• ## Question: What are the differences between the roasting and calcination processes used in ...

Posted in: Chemistry | Date: 25/05/2016

1. In roasting, an ore is heated in the presence of excess of air/oxygen while in calcination same thing is done in the absence/limited supply of oxygen

• ## Question: How is plaster of Paris obtained?

Posted in: Chemistry | Date: 25/05/2016

By heating gypsum.

• ## Question: What are the purine nitrogenous bases that found in a DNA molecule?

Posted in: Biology | Date: 25/05/2016

• ## Question: Why is DNA called a polynucleotide?

Posted in: Biology | Date: 25/05/2016

Because it is composed of nucleotides joined together to make a long chain called a polynucleotide

• ## Question: Who isolated DNA for the first time from pus cells?

Posted in: Biology | Date: 25/05/2016

Friedrich Miescher

• ## Question: What are the practices that can help in controlling air pollution?

Posted in: Biology | Date: 25/05/2016

Using CNG vehicles , planting trees

• ## Question: Why for making gold ornaments, 22-carat gold is preferred to 24-carat gold?

Posted in: Chemistry | Date: 28/05/2016

24 carat gold is pure gold , it is weak to make ornaments . To impart some strength we add some imputrity to it so that we can make ornaments.

• ## Question: Why metals conduct electricity?

Posted in: Physics | Date: 28/05/2016

with the help of free electrons present in it .

• ## Question: What are the chemical equations for the reactions taking place when a solution o...

Posted in: Chemistry | Date: 28/05/2016

AlCl3 + 3NH4OH = Al(OH)3 + 3 NH4Cl

• ## Question: What are the chemical equations for the reactions taking place when sulphur diox...

Posted in: Chemistry | Date: 28/05/2016

SO2 (aq) + H2O (l)  ------>   H2SO3 (aq)

• ## Question: What is the formulation for the functional groups of alcohols and carboxylic aci...

Posted in: Chemistry | Date: 28/05/2016

Alcohol ----->   R-OH

Carboxylic Acid  ------> R-COOH

• ## Question: What is the large industry based on using sulphuric acid?

Posted in: Chemistry | Date: 28/05/2016

fertilizer industry

• ## Question: What are strategic metals?

Posted in: Chemistry | Date: 28/05/2016

metals which are required for the national defence of a country are Strategic metals.

• ## Question: What are the main products formed when sodium ethanoate is heated with soda lime...

Posted in: Chemistry | Date: 28/05/2016

CH3COONa         +     NaOH ----------------> CH4 + Na2CO3

sodium ethanoate       soda lime             methane   sodium carbonate

• ## Question: Which type of nuclear process is currently used in nuclear electricity generator...

Posted in: Physics | Date: 28/05/2016

• ## Question: To which galaxy does our earth belong?

Posted in: Physics | Date: 28/05/2016

Milkyway galaxy.

• ## Question: What are the main products formed when propanone and hydrogen cyanide form an ad...

Posted in: Chemistry | Date: 28/05/2016

CH3COCH3 + HCN ------------------> CH3COHCNCH3

( 2-hydroxy-2-methylpropanenitrile )

• ## Question: Which major industry using ammonia as basic material?

Posted in: Chemistry | Date: 28/05/2016

fertilizer industry

• ## Question: What is WAN?

Posted in: Basic Computer | Date: 28/05/2016

Wide Area Network

• ## Question: What are the kind of cells present in blood?

Posted in: Biology | Date: 28/05/2016

RBC, WBC ,PLATELETS

• ## Question: What is the latitudinal extent of India?

Posted in: Geography | Date: 28/05/2016

8°4'N to 37°6'N

• ## Question: What type of forces keep the Sun and its planets in their respective places?

Posted in: Physics | Date: 28/05/2016

centripetal force provided by gravitational force

• ## Question: Why is Indian Ocean named after our country?

Posted in: Geography | Date: 28/05/2016

because India has the longest coast line in the region of Indian ocean

• ## Question: What force makes an apple on a tree to fall to the ground?

Posted in: Physics | Date: 28/05/2016

gravitational force

• ## Question: What are racemic mixtures?

Posted in: Chemistry | Date: 28/05/2016

Racemic mixture is one that has equal amounts of left- and right-handed enantiomers of a chiral molecule.

• ## Question: What is the process of separation of d and l components of racemic mixture calle...

Posted in: Chemistry | Date: 28/05/2016

resolution

• ## Question: What are the. Chemical. Methods used for resolution of racemic mixture?

Posted in: Chemistry | Date: 28/05/2016

chromatographic method

• ## Question: What is an electric motor?

Posted in: Physics | Date: 28/05/2016

Electric motor is a device which converts electrci energy into mechanical energy .

• ## Question: Who proposed the Big Bang Theory?

Posted in: Physics | Date: 28/05/2016

Georges Lemaitre

• ## Question: What are the methods and advantages of artificial propagation?

Posted in: Biology | Date: 28/05/2016

Layering , Cutting , Grafting , Tissue culture

• ## Question: What are the differences among solids, liquids and gases?

Posted in: Chemistry | Date: 28/05/2016

Solid -> fixed shape and size

Liquid ->  the shape of the vessel in which it is stored

gas -> no fixed shape and size

• ## Question: How can matter change its state?

Posted in: Physics | Date: 28/05/2016

By Supplying Heat or Thermal Energy

• ## Question: What factors affect the rate of evaporation?

Posted in: Chemistry | Date: 28/05/2016

Surface area, Humidity and Difference between temperatures of the body and it's surrounding .

• ## Question: Which position of bulky group provides more stability to the system?

Posted in: Chemistry | Date: 28/05/2016

equatorial position

• ## Question: Why is chair conformational of cyclohexane more stable than boat form?

Posted in: Chemistry | Date: 28/05/2016

Less torsional strain in chair confomation of cyclohexane

• ## Question: What are the two conformational of cyclohexane?

Posted in: Chemistry | Date: 28/05/2016

Boat and chair

• ## Question: What is the dihedral angle is staggered conformational?

Posted in: Chemistry | Date: 28/05/2016

sixty degrees

• ## Question: Which isomer out of staggered and eclipsed is more stable?

Posted in: Chemistry | Date: 28/05/2016

Staggered isomer

• ## Question: What is structural isomerism?

Posted in: Chemistry | Date: 28/05/2016

chain , position and functional isomerism

• ## Question: Which river is also known as Dakshin Ganga?

Posted in: Geography | Date: 28/05/2016

Godavari

• ## Question: Narmada and Tapi flow through which type of valley?

Posted in: Geography | Date: 28/05/2016

Rift Valley

• ## Question: Jammu and Kashmir, Punjab, Rajasthan and Gujarat Share international boundary wi...

Posted in: Geography | Date: 28/05/2016

Pakistan

• ## Question: What is the product when 1,3-butadiene reacts with HBr at low temperature?

Posted in: Chemistry | Date: 28/05/2016

a mixture of two constitutional isomers -> 3-bromo-1-butene and 1-bromo-2-butene.

• ## Question: What is boiling?

Posted in: Chemistry | Date: 28/05/2016

rapid vaporization of a liquid

• ## Question: What is melting point?

Posted in: Chemistry | Date: 28/05/2016

Temperature at which Solid melts .

• ## Question: What is the major difference between resonance and hyperconjugation?

Posted in: Chemistry | Date: 28/05/2016

Resonance effect involves delocalization of pi electrons while Hypeconjugation involves delocalization of sigma electrons

• ## Question: What is meant by 'Latent Heat of vaporisation'?

Posted in: Chemistry | Date: 28/05/2016

The heat required to change state from liquid to gaseous is called the latent heat of vapourization.

• ## Question: What is evaporation and its cooling effect in terms of kinetic energy of particl...

Posted in: Chemistry | Date: 28/05/2016

Evaporation depends on the no. of molecules located near the surface of a liquid .Those molecules which have high kinetic energy will reach to the surface easily . kinetic energy increases with increase in temperature .

• ## Question: Order of reactivity towards nucleophilic substitution in RI, RCl, RBr

Posted in: Chemistry | Date: 28/05/2016

RCI < RBr < Rl

• ## Question: What is the order for halogenation of alkanes in presence of light?

Posted in: Chemistry | Date: 28/05/2016

F2 >Cl2 > Br2 > I2

• ## Question: Why is p-nitro aniline weaker Base than aniline?

Posted in: Chemistry | Date: 28/05/2016

nitro group is a deactivating group.it reduces electron density resulting in less lewis basic nature .

• ## Question: Order of basic character for phenyl amine, diphenyl amine, triphenyl amine?

Posted in: Chemistry | Date: 28/05/2016

Triphenyl amine < Diphenyl amine  < Phenylamine

• ## Question: What are the functional groups in phthallic acid?

Posted in: Chemistry | Date: 28/05/2016

carboxylic acid

• ## Question: Which is. More acidic between oxalic and malonic acids?

Posted in: Chemistry | Date: 28/05/2016

Oxalic acid

• ## Question: Acidic strength order in ortho, meta and para choro phenol.

Posted in: Chemistry | Date: 28/05/2016

Ortho > Meta > Para

• ## Question: Which is. More acidic between m-nitro petrol and p-nitro phenol?

Posted in: Chemistry | Date: 28/05/2016

p- nitro phenol

• ## Question: Which is more acidic? Water or. Alcohol?

Posted in: Chemistry | Date: 28/05/2016

water except methanol

• ## Question: Which effect causes phenol to be more acidic than alcohols?

Posted in: Chemistry | Date: 28/05/2016

resonance effect .

• ## Question: What are the Faraday's laws of electrolysis?

Posted in: Physics | Date: 28/05/2016

the mass of the substance liberated at an electrode is directly proportional to the total electric charge passed through the substance and  the molar mass of the substance while it is inversely proportional to the valency number of ions of the substance .

• ## Question: What is the reactivity sequence of alkyl halides by SN1 reaction?

Posted in: Chemistry | Date: 28/05/2016

Methyl Halide < Primary Halide < Secondary Halide < Tertiary Halide < Allyl Halide < Benzyl Halide

• ## Question: What are primary and secondary fuels?

Posted in: Chemistry | Date: 28/05/2016

Fuel which we get from natural resources are primary fuels while artificial fuels are Secondary fuels .

• ## Question: What is the longest chain rule in. Nomenclature of organic compounds?

Posted in: Chemistry | Date: 28/05/2016

The longest continuous chain of carbon atoms is selected as the parent hydrocarbon .

The parent carbon chain is numbered in such a way so that the other side chain or group attached to the chain are indicated by the lowest possible number .

• ## Question: What are the chemically identifying tests for unsaturated hydrocarbons?

Posted in: Chemistry | Date: 28/05/2016

Bromine water test

Baeyer's test

• ## Question: Which unsaturated compound doesn't give unsaturation tests?

Posted in: Chemistry | Date: 28/05/2016

Benzene

• ## Question: What is stereochemistry?

Posted in: Chemistry | Date: 28/05/2016

Branch of chemistry which deals with spatial arrangement of atoms in the structure of molecules is Stereochemistry .

• ## Question: What are the different types of chromosomes?

Posted in: Biology | Date: 28/05/2016

Autosomes and Allosomes

• ## Question: Which form of dienes ate more stable?

Posted in: Chemistry | Date: 28/05/2016

Conjugated dienes

• ## Question: Product formed when peroxy acids react with alkenes?

Posted in: Chemistry | Date: 28/05/2016

Epoxides will form

• ## Question: What is SI unit of temperature?

Posted in: Chemistry | Date: 28/05/2016

Kelvin

• ## Question: What is a dry ice and what are its properties?

Posted in: Chemistry | Date: 28/05/2016

dry ice is CO2 in solid state , it is used as a cooling agent

• ## Question: Why we wear cotton clothes in summer?

Posted in: Physics | Date: 28/05/2016

they are breathable

• ## Question: Why do diffusion become faster at higher temperatures?

Posted in: Chemistry | Date: 28/05/2016

Diffusion is directly proportional to Kinetic energy and with increase in temperature kinetic energy increases .

• ## Question: How is ethyI alcohol obtained from sweet fruits?

Posted in: Chemistry | Date: 28/05/2016

By Fermentation

• ## Question: What is the contact process for the manufacture of sulphuric acid?

Posted in: Chemistry | Date: 28/05/2016

SO2 + O2  ---> 2SO3

H2SO4 + SO3  ---> H2S2O7

H2S2O7  + H2O  ---> H2SO4

• ## Question: Why is light not considered matter?

Posted in: Chemistry | Date: 28/05/2016

matter is something which has mass and occupy space . light does not have any mass.

• ## Question: Why do gases diffuse rapidly?

Posted in: Chemistry | Date: 28/05/2016

high kinetic energy

• ## Question: What is 'Volatile Liquid'?

Posted in: Chemistry | Date: 28/05/2016

liquids which evaporates easily at RT are volatile liquids like petrol

• ## Question: What is meant by the term 'Volume'?

Posted in: Physics | Date: 28/05/2016

Quantity of space occupied by a matter is considered as Volume

• ## Question: What is Density?

Posted in: Physics | Date: 28/05/2016

Density is mass per unit volume of a substance.

• ## Question: What is the full form of LPG?

Posted in: Chemistry | Date: 28/05/2016

Liquefied Petroleum Gas

• ## Question: What are the characteristics of matter?

Posted in: Chemistry | Date: 28/05/2016

Matter is anything that occupies space and has mass ,odour and undergo chemical reactions .

• ## Question: What are the differences between a positron and a neutrino?

Posted in: Physics | Date: 28/05/2016

Neutrino on the other hand is a neutral particle while positron has + charge .

• ## Question: What is sublimation?

Posted in: Chemistry | Date: 28/05/2016

The process of conversion of solid to gas directly by absorbing heat without going through the liquid state is Sublimation .

• ## Question: What is the full form of CNG?

Posted in: Chemistry | Date: 28/05/2016

Compressed Natural Gas

• ## Question: Which diffuse faster, a liquid or a gas?

Posted in: Chemistry | Date: 28/05/2016

Gases diffuse faster than liquids

• ## Question: Why an iron almirah is a solid?

Posted in: Chemistry | Date: 28/05/2016

because it has fixed shape, size and volume .

• ## Question: Why water is a liquid at room temperature?

Posted in: Chemistry | Date: 28/05/2016

because of hydrogen bonds

• ## Question: Why should we wear cotton clothes in summer?

Posted in: Chemistry | Date: 28/05/2016

they are breathable .

• ## Question: How mirage occurs?

Posted in: Physics | Date: 28/05/2016

due to total internal reflection of light

• ## Question: What is the mirror formula?

Posted in: Physics | Date: 28/05/2016

1/f = 1/v + 1/u

F : Focal length of mirror

u : object distance

v : image distance

• ## Question: What is the scientific name of particles which make up matter?

Posted in: Chemistry | Date: 28/05/2016

electron,  proton and neutron

• ## Question: What is the melting point of ice?

Posted in: Chemistry | Date: 29/05/2016

273 K

• ## Question: The Ganga plain extends between which two rivers?

Posted in: Geography | Date: 29/05/2016

Ghaggar river  and Tista river

• ## Question: What is 'matter'?

Posted in: Chemistry | Date: 29/05/2016

anything which occupy space and have mass .

• ## Question: Which river marks the eastern most boundary of the Himalayas?

Posted in: Geography | Date: 29/05/2016

Brahmaputra

• ## Question: What the longitudinal valley is called that lying between lesser Himalaya and th...

Posted in: Geography | Date: 29/05/2016

"Duns"

• ## Question: What the outer most range of the Himalaya is called?

Posted in: Geography | Date: 29/05/2016

shiwalik range

• ## Question: Himalayas uplift out of which sea?

Posted in: Geography | Date: 29/05/2016

Tethys sea

• ## Question: What is the time lag from Gujrat to Arunachal Pradesh?

Posted in: Geography | Date: 29/05/2016

2 hrs

• ## Question: What is the role of decomposers in our biotic environment?

Posted in: Biology | Date: 29/05/2016

Decomposers increase the soil nutrient and clean the environment.

• ## Question: What are the factors on which the strength of magnetic field produced by current...

Posted in: Physics | Date: 29/05/2016

no. of turns and nature of material use in making the solenoid .

• ## Question: What is mirage?

Posted in: Physics | Date: 29/05/2016

An optical illusion caused by the internal refraction of light from the sky by heated air

• ## Question: Which technique used in a washing machine to squeeze out water from wet clothes ...

Posted in: Chemistry | Date: 29/05/2016

Centrifugation Technique

• ## Question: How is water purified on a large scale at water works?

Posted in: Chemistry | Date: 29/05/2016

by settling down it in large tanks and with the use of disinfectent .

• ## Question: What will happen if saturated solution is cooled?

Posted in: Chemistry | Date: 29/05/2016

Precipitation

• ## Question: What is the name of the sea in the south west of our country?

Posted in: Geography | Date: 29/05/2016

Arabian Sea

• ## Question: Which is the Southern most point of our country?

Posted in: Geography | Date: 29/05/2016

Indira Point in the Nicobar islands

• ## Question: Which group of islands is in the south east of India?

Posted in: Geography | Date: 29/05/2016

Andaman and Nicobar Islands

• ## Question: What is the land mass of our country?

Posted in: Geography | Date: 29/05/2016

3.228 million sq. km

• ## Question: What is Le-çhatelier’s principle?

Posted in: Physics | Date: 29/05/2016

According to Le-çhatelier’s principle , If a system at equilibrium is subjected to a disturbance, then system will tend to move in the direction that tends to nullify the effect of those disturbances.

• ## Question: What is the main function of a transponder in communication satellites?

Posted in: Physics | Date: 29/05/2016

to retransmit the recieved signal with greater power.

• ## Question: What are the advantages of making alloys?

Posted in: Chemistry | Date: 29/05/2016

we get desired properties/characteristics as it is a mixture of several metals

• ## Question: Which mixtures are found in nature?

Posted in: Chemistry | Date: 29/05/2016

Air, Soil, Water , Mineral

• ## Question: What the fluid filled bag is called that surrounds the foetus?

Posted in: Biology | Date: 29/05/2016

Amniotic sac

• ## Question: What is meant by ‘persistence of vision’?

Posted in: Physics | Date: 29/05/2016

The inability of human brain to perceive more than two images formed on the retina within an interval of 1/16th of a second is called Persistance of vision .

• ## Question: What is the full form of GMO?

Posted in: Biology | Date: 29/05/2016

Genetically Modified Organism

• ## Question: What is sol?

Posted in: Chemistry | Date: 29/05/2016

the latin name of sun

• ## Question: Between soap solution and sugar solution, which will scatter light and why?

Posted in: Chemistry | Date: 29/05/2016

Soap solution as it forms a colloidal mixture

• ## Question: Out of colloidal, solution and suspension, which has the largest particle?

Posted in: Chemistry | Date: 29/05/2016

Suspension particle

• ## Question: What is the name of the Iron and Steel plant located in Chhattisgarh?

Posted in: Geography | Date: 29/05/2016

Bhilai

• ## Question: Which country having the highest rank in Human Development Index in 2003?

Posted in: Geography | Date: 29/05/2016

Norway

• ## Question: By which process energy is produced in a nuclear reactor?

Posted in: Physics | Date: 29/05/2016

Either by nuclear fission and nuclear fusion

• ## Question: What is the special name of those days when the Sun rises exactly in the east?

Posted in: Physics | Date: 29/05/2016

EQUINOX.

• ## Question: Out of colloidal, solution and suspension, which has the smallest particle?

Posted in: Chemistry | Date: 29/05/2016

solution particle .

• ## Question: What is the major difference between a solution and an ordinary mixture?

Posted in: Chemistry | Date: 29/05/2016

solution is homogeneous while ordinary mixture may be homogeneous or heterogeneous .

• ## Question: What is the purpose of alkyl or hydride shift?

Posted in: Chemistry | Date: 29/05/2016

to increase the stability

• ## Question: What is the hybridisation of carbocation and carbanion?

Posted in: Chemistry | Date: 29/05/2016

For Carbocation , it is sp2 while for carbanion it could be  sp2 or sp3

• ## Question: In which type of cleavage are free radicals formed?

Posted in: Chemistry | Date: 29/05/2016

Homolytic Cleavage

• ## Question: What is the hybridisation and magnetic nature of free radicals?

Posted in: Chemistry | Date: 29/05/2016

sp2 and Paramagnetic nature .

• ## Question: Which country having the largest population in Africa?

Posted in: Geography | Date: 29/05/2016

Nigeria

• ## Question: What is the effect of heat on sulphur?

Posted in: Chemistry | Date: 31/05/2016

it turns from a solid to liquid

• ## Question: What is the Haber process for the manufacture of ammonia?

Posted in: Chemistry | Date: 31/05/2016

N2 (g) + 3H2 (g) -------------->  2NH3 (g)  (ΔH = -92.4 kJ/mol)

• ## Question: What will happen when ethanoic acid reacts with sodium carbonate?

Posted in: Chemistry | Date: 31/05/2016

2CH3COOH + Na2CO3 =  2CH3COONa + H2O + CO2

• ## Question: Which part of ear vibrates when outside sound fall on it?

Posted in: Physics | Date: 31/05/2016

Ear Drum

• ## Question: What are the characteristics of sound which depends on Amplitude?

Posted in: Physics | Date: 31/05/2016

loudness

• ## Question: What is the use of ultrasound in industry and in hospitals?

Posted in: Physics | Date: 31/05/2016

medical investigation of internal organs and Ultrasonic Cleaning

• ## Question: What happens to the gravitational force between two objects when the distance be...

Posted in: Physics | Date: 31/05/2016

becomes 4 times of intial

• ## Question: What are metallic minerals?

Posted in: Chemistry | Date: 31/05/2016

the minerals which comtain some amount of metal are Metallic minerals.

• ## Question: Why is the area of cultivable land decreasing day-by-day in India?

Posted in: Geography | Date: 31/05/2016

soil erosion

• ## Question: Why is neoprene considered superior to natural rubber?

Posted in: Chemistry | Date: 31/05/2016

Neoprene has betterand desired  properties than natural rubber as it is synthetic.

• ## Question: Which is the most popular continent?

Posted in: Geography | Date: 31/05/2016

Asia

• ## Question: Why will a sheet of paper fall lower than one that is crumpled into a ball?

Posted in: Physics | Date: 31/05/2016

because  a sheet of paper has more area , so air resistance will be more .

• ## Question: What is One Newton?

Posted in: Physics | Date: 31/05/2016

1kg x 1ms-2

• ## Question: What does the slope of speed-time graph indicate?

Posted in: Physics | Date: 31/05/2016

acceralation

• ## Question: What is the barrier between protoplasm and outer environment in an animal cell?

Posted in: Biology | Date: 31/05/2016

cell membrane

• ## Question: Which colour appears when we add drops of iodine solution in a test tube contain...

Posted in: Chemistry | Date: 31/05/2016

blue-black.

• ## Question: Why is there a need to control birth rate in India?

Posted in: Economics | Date: 02/06/2016

population of india is increasing very fast and it will increase poverty and unemployment due to limited resources so ,birth rate should be controlled.

• ## Question: What is meant by 'unemployment'?

Posted in: Economics | Date: 02/06/2016

When a person willing to do a job  but unable to find work, its called unemployment .

• ## Question: What are the ways to cope up with earthquakes?

Posted in: Social Studies | Date: 02/06/2016

Stay clear of areas with dangling power lines or those that are within reach of these wires

• ## Question: What is the age eligibility criteria for the BITSAT exam?

Posted in: BITSAT | Date: 02/06/2016

no age limit

• ## Question: What is 'General Insurance'?

Posted in: Economics | Date: 02/06/2016

all kinds of insurance like fire, marine and all general insurance except life insurance are General insurance.

• ## Question: What happens after syngamy?

Posted in: Biology | Date: 02/06/2016

Syngamy means fertilization, on which a zygote is formed after fusion of reproductive cells

• ## Question: When did the congress demand for Purna Swaraj?

Posted in: History | Date: 02/06/2016

January 26, 1930

• ## Question: Design a dam with the parabola x²=18y

Posted in: Advanced Maths | Date: 02/06/2016

Compare with parabola equation with x2=4ay and draw graph... a=18/4

• ## Question: Name the source from which the earth receives ultraviolet radiation.

Posted in: Physics | Date: 27/06/2016

from Sun rays.

• ## Question: Name the source from which the earth receives ultraviolet radiation.

Posted in: Physics | Date: 30/07/2016

sun

• ## Question: What is the capital of Cameroon ?

Posted in: Geography | Date: 30/07/2016

Yaounde

• ## Question: A bullet fired at an angle of 30° with the horizontal hits the ground 3km away....

Posted in: Physics | Date: 30/07/2016

with initial velocity 186m/s , the maximum range is 3466m which is less than 5km.

• ## Question: An aircraft is flying at a height of 3400 m above the ground. If the angle subte...

Posted in: Physics | Date: 30/07/2016

1862.3m/s

• ## Question: What are the balanced chemical equations for the reactions taking place when con...

Posted in: Chemistry | Date: 30/07/2016

C12H22O11(s) + H2SO4(aq) + 1/2 O2(g) → 11C(s) + CO2(g) + 12H2O(g) + SO2(g)

• ## Question: How does the strength of the magnetic field at the centre of a circular coil of ...

Posted in: Physics | Date: 30/07/2016

increases as we increase the value of current.

• ## Question: What is the effect of the blood vessels in our body?

Posted in: Biology | Date: 30/07/2016

Blood vessels play an important role in diabetes as they carry glucose in the blood as well as hormones such as insulin

• ## Question: What are the major divisions of the autonomic nervous system in man in the human...

Posted in: Biology | Date: 30/07/2016

Sympathetic nervous system and parasympathetic nervous system

• ## Question: What are the evolutionary forces that leading to the origin of a new species acc...

Posted in: Biology | Date: 30/07/2016

natural selection and mutation

• ## Question: Why is it that iron does not occur as a metal in the crust of the earth?

Posted in: Chemistry | Date: 30/07/2016

it forms oxide with the gases present in the atmosphere

• ## Question: Why does a cut diamond shine more than a glass piece with diamond cut?

Posted in: Physics | Date: 30/07/2016

The refractive index of diamond is more than glass

• ## Question: What is the consequence of making angle of incidence of light, at an interface, ...

Posted in: Physics | Date: 30/07/2016

total internal reflection will occur

• ## Question: What is meant by 'critical angle' for a ray of light going from one medium into ...

Posted in: Physics | Date: 30/07/2016

When light travels from denser to rarer medium, the angle of incidence at which angle of  refraction is 90 degree is called critical angle of incidence .

• ## Question: What are electrolytes?

Posted in: Physics | Date: 30/07/2016

A chemical compound that ionizes when dissolved or molten to produce an electrically conductive medium

• ## Question: What are the two common shapes of galaxies?

Posted in: Physics | Date: 30/07/2016

Spiral Galaxy & Elliptical Galaxy.

• ## Question: How is the rate of reaction influenced by adding to the reacting mixture a produ...

Posted in: Chemistry | Date: 30/07/2016

by adding catalyst or by increasing concentration , temperature and surface area of the reactant .

• ## Question: How deoxygenated blood from right atrium chamber is sent to lungs for oxygenatio...

Posted in: Biology | Date: 30/07/2016

with the help of artery-blood vesse

• ## Question: Which blood vessel brings deoxygenated blood to the human heart?

Posted in: Biology | Date: 30/07/2016

superier venacava and inferior venacava

• ## Question: What are the chemical equations for the reactions taking place when carbon dioxi...

Posted in: Chemistry | Date: 30/07/2016

CO2+H2O--->H2CO3

• ## Question: In which ways erosion of soil can be checked?

Posted in: Biology | Date: 30/07/2016

by planting more trees and cutting less no. of trees

• ## Question: Which natural agents can cause erosion of soil?

Posted in: Biology | Date: 30/07/2016

heavy rainfall

• ## Question: What is vestigial organ present in human body?

Posted in: Biology | Date: 30/07/2016

Appendix

• ## Question: Which part of hind brain takes part in regulation of respiration?

Posted in: Biology | Date: 30/07/2016

Medulla oblongata

• ## Question: What is the function of hormone 'thyroxin' in our bodies?

Posted in: Biology | Date: 30/07/2016

Thyroxine’s principal function is to stimulate the consumption of oxygen and thus the metabolism of all cells and tissues in the body.

• ## Question: What are other combustible components of biogas?

Posted in: Chemistry | Date: 30/07/2016

H2 , CO

• ## Question: What is the major fuel component of biogas?

Posted in: Chemistry | Date: 30/07/2016

Methane

• ## Question: How is astigmatism defect counteracted?

Posted in: Physics | Date: 30/07/2016

by using contact lenses.

• ## Question: What is 'astigmatism'?

Posted in: Physics | Date: 30/07/2016

Astigmatism is a kind of eye defect.

• ## Question: How can it be shown that ammonia is highly soluble in water and gives an alkalin...

Posted in: Chemistry | Date: 30/07/2016

litmus paper test

• ## Question: Which type of these satellite orbitals will be suitable for collecting data for ...

Posted in: Physics | Date: 30/07/2016

Geostationary satellites

• ## Question: What are the main products formed when methanal is reduced with hydrogen in the ...

Posted in: Chemistry | Date: 30/07/2016

methanol

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