multiple choice questions
Ch - 4 materials : metals and non metals
Answers
Answer:
The property of metals by which they can be beaten in to thin sheets is called- a. malleability b. Ductility c. conduction d. Expansion Ans . 1. (a)
2. Which one of the following is metal? a. C b. N c. Na d. O Ans . 2. (c)
3. Which one of the following is non metal? a. Zn b. Al c. Fe d. N Ans . 3. (d)
4. All materials shown property of malleability expect a. Iron b. Graphite c. Aluminium d. Silver Ans . 4. (b)
5. Which one of the following is a good conductor of electricity? a. Iron b. Plastic c. Wood d. Glass Ans . 5. (a)
6. The property of metal by which it can be drawn into wires is called a. Conductivity b. malleability c. Ductility d. Decorating Ans . 6. (c)
7. The metals that produce ringing sounds, are said to be- a. malleable b. sonorous c. Lustrous d. hard Ans . 7. (b)
8. Which metal is found in liquid state t room temperature? a. Fe b. Zn c. Hg d. Al Ans . 8. (c)
9. The solution of ash of magnesium ribbon is- a. Acidic b. Basic c. Neutral d. All of these Ans . 9. (b)
Explanation:
10. What is the product when sulphur reacts with oxygen? a. Sulphuric acid b. Sulphur trioxide c. Sulphurous acid d. Sulphur dioxide Ans . 10. (d)
11. When sulphur dioxide is dissolve in water then- a. Sulphur is formed b. Sulphur trioxide is formed c. Sulphuric acid is formed d. Sulphurous acid is formed. Ans . 11. (c)
12. What is the chemical formula of sulphurous acid- a. H2SO4 b. SO2 c. SO3 d. H2SO3 Ans . 12. (d)
13. The sulphuric acid turns blue litmus paper into- a. Red b. Green c. Yellow d. Dark blue Ans . 13. (a)
14. Oxides of non metals are _______ in nature a. Basic b. Acidic c. Neutral d. All of these Ans . 14. (b)
15. Sodium metal is stored in- a. Water b. Alcohol c. Kerosene d. Ether Ans . 15. (c)
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 Ans . 17. (c)
18. Which non-metal catches fire if the exposed to air a. Sodium b. Phosphorous c. Calcium d. Uranium Ans . 18. (b)
19. What is the chemical formula of copper sulphate? a. CuSO4 b. CuCO3 c. CuCl2 d. CuO Ans . 19. (b)
20. Which gas are produced when metal react with acids a. Oxygen b. Nitrogen c. Hydrogen d. Carbon dioxide Ans . 20 (c)
21. Which one of the following does not react with acids? a. Cu b. Ni c. Cr d. O Ans . 21. (d)
22. Which one of the following gas burns with the "pop" sound? a. Oxygen b. Hydrogen c. Chlorine d. Hydrogen sulphide Ans . 22. (b)
23. Which of the following can be beaten in to thin sheets? a. Zinc b.Phosphorus c. Sulphur d. Oxygen Ans . 23. (a)
24. Which of the following statements are correct? a. All metals are ductile b All non metals are ductile c Generally metals are ductile d.some metals are ductile Ans . 24. (c)
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