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Saturday, June 4, 2011

Mcq on metal and Non metal for class 8th

Metal and Non metal
1. Of these, the most ductile metal is ___________.
1. Al
2. Au
3. Cu
4. Ag          
2. Which oxide of a metal gets reduced only by coke and not by H2 gas or CO gas?
1. Fe2O3
2. PbO
3. ZnO
4. CuO    
3. Which of the following metals is extracted only by electrolysis?
1. Zn
2. Al
3. Fe
4. Cu        
4. The metal reacting readily with cold water is ___________.
1. Au
2. Ag
3. Na
4. Mg     
5.Which of the following metals does not displace H2 gas from dilute HCl or dilute H2SO4?
1. Mg
2. Cu
3. Zn
4. Al
6. The property of metals by which they can be beaten in to thin sheets is called-
a. malleability
b. Ductility
c. conduction
d. Expansion

7. Which one of the following is metal?
a. C
b. N
c. Na
d. O

8. Which one of the following is non metal?
a. Zn
b. Al
c. Fe
d. N

9. All materials shown property of malleability expect
a. Iron
b. Graphite
c. Aluminium
d. Silver
Ans . 4. (b)

10. Which one of the following is a good conductor of electricity?
a. Iron
b. Plastic
c. Wood
d. Glass

11. The property of metal by which it can be drawn into wires is called
a. Conductivity
b. malleability
c. Ductility
d. Decorating

12. The metals that produce ringing sounds, are said to be-
a. malleable
b. sonorous
c. Lustrous
d. hard
13. Which metal is found in liquid state t room temperature?
a. Fe
b. Zn
c. Hg
d. Al
14. The solution of ash of magnesium ribbon is-
a. Acidic
b. Basic
c. Neutral
d. All of these
15. What is the product when sulphur reacts with oxygen?
a. Sulphuric acid
b. Sulphur trioxide
c. Sulphurous acid
d. Sulphur dioxide


16. Which one of the following metal reacts vigorously with oxygen and water?
a. Sodium
b. Potassium
c. Calcium
d. Magnesium
Ans . 16. (a)

17. Which metal is present in Calcium Hydroxide?
a. C
b. O
c. Ca
d. H

18. Which non-metal catches fire if the exposed to air
a. Sodium
b. Phosphorous
c. Calcium
d. Uranium

19. What is the chemical formula of copper sulphate?
a. CuSO4
b. CuCO3
c. CuCl2
d. CuO

20. Which gas are produced when metal react with acids
a. Oxygen
b. Nitrogen
c. Hydrogen
d. Carbon dioxide

14 comments:

Unknown said...

informative

Unknown said...

Nice questions

Unknown said...

19 ans is wrong

Unknown said...

19 ans is wrong

Unknown said...

Nice questions

Anonymous said...

The answer of 19th question is CuSo4

Unknown said...

U r right

Unknown said...

U r right

Unknown said...

19th answer is wrong

Unknown said...

Very well and good questions...

Unknown said...

U r right

Unknown said...

18th answer is wrong.phosphorous is the correct answer

Unknown said...

19 and 18th is wrong

Unknown said...

19 ans wrong right answer is CuSO4

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