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Published in: Chemistry
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Question Papers of Class 9 and 10 Chemistry

Suranjana M / Aurangabad

19 years of teaching experience

Qualification: M.Tech (IIT,Kharagpur - 2000)

Teaches: Science, Chemistry

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  1. Chemistry — Test 2, Chapter 3, ICSE, Class IX Maximum Marks — 50 Time — 2 hours Question 1 (a) Select the correct term from the terms A to F given below, correlating with each statement 1 to 5. [5] (1) (2) (3) (4) (5) Various colour pigments of chlorophyll can be separated using this technique Process of changing from solid state to gaseous state. A separation technique to separate two solid mixture having different mass Process used to separate a mixture of immiscible liquids. Process used to separate a mixture of miscible liquids. A. Fractional distillation B. Paper chromatography C. Gravity separation D. Separating funnel E. Sublimation (b) Select the correct answer from A to E pertaining to the elements 1 to 5. [5] A. Metal B. Liquid non-metal C. Gaseous non-metal D. Metalloid E. Nobel gas 1. Hydrogen 2. Argon 3. Tungsten 4. Bromine 5. Antimony (c) Fill in the blanks with the correct world from the words in brackets: [3] a. Variable valance is exhibited, since electrons are lost from an element from the (valence / outermost) shell. b. (Iodine / naphthalene) is an example of a solid that sublimes in the absence of heat. c. Solidification is also termed as Question 2 (fusion / freezing). (a) Differentiate between mixture and a compound [2] (b) Why do we need to separate different components of a mixture? Give two examples. [2] (c) How will you separate sand and water from their mixture? [2] (d) Is it possible to separate sugar mixed with wheat flour? If yes, how will you do it? [2] (e) How would you obtain clear water from a sample of muddy water? [2] 1
  2. Chemistry — Test 2, Chapter 3, ICSE, Class IX Maximum Marks — 50 Time — 2 hours Question 3 (i) Fill up the blanks: [3] (a) When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example of (b) Salt is obtained from seawater by the process of (c) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called (ii) True or false? [4] (a) A mixture of milk and water can be separated by filtration. (b) A mixture of powdered salt and sugar can be separated by the process of winnowing. (c) Separation of sugar from tea can be done with filtration. (d) Grain and husk can be separated with the process of decantation. Question 4 (a) How will you separate the following mixtures? i. Carbon dioxide and hydrogen ii. Colours in dye iii. Common salt and sand [5] iv. Gold from mixture of Gold and copper fillings v. lead chloride from a mixture of lead chloride and silver chloride (b) Name one: [3] (i) metal liquid at room temperature. (ii) non-metal which is a conductor of electricity. (iii) non-metal which has lustre Question 5 Write Short notes on ii. iii. vi. 2 Colloidal Solutions Fractional Distillation Metalloids Compound with an example Ions Chromatography

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