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Answers and Solutions

What's Your Question?
Answer

A.

1 B  2. all are correct  3. D

B

i) d ii) c iii) a iv) b

C data given in queation is inadequate

D Acidic : SO2

Basic Na2O, CaO

Neutral: H2O

Amphoteric:  ZnO, Al2O3

1. hydrogen gas

2. simple displacement reaction

3. conductor & ductility

F Graphite is a good conductor of electricity

Answer

answers : 1(B)       2(B)   3(C)    

 

 

Answer

A 1. (B) 2. (B) 3. (c)

B 1=d   2=c   3=a   4=b

C complete data are not given.

D acidic= SO2, Basic= Na2O, CaO Natural= H2O, Amphoteric= ZnO, Al2O3

E 1= hydrogen gas   2= displacement reaction  3= ductility

F diamond is bad conductor as it can not pass electricity, however diamond is good insulator of heat 

 

 

Answer
1-b,2-d,3-a B. 1-d 2-c 3-a 4-b C. B-CuSO4.5H2O D- salt of chromium D. Acidic-SO2 Basic-Na2O,CaO Neutral-H2O Amphoteric-Al2O3,ZnO E.1-H2 2-displacement reaction 3.opacity F.diamond is a bad conductor of electricity.
Answer
1- bromine n mercury 2- oxide of metal r basic. 3-red B- 1-iron for making rails. 2-oxygen for living bieng inhale respiration. 3-chlorine for disinfecting water. 4-copper for electrical wire. D- SO2 is acidic, Na2o is basic, zno is amphoteric, H2O is neutral, Al2o3 is amphoteric and cao is basic. E- 1- hydrogen 2-reactivity series 3-ductility F- no ,diamond is not a good conductor of electricity because diamond contains carbon which do not conduct electricity.

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