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Class 8 Science Chapter 4 Materials Metals And Non Metals Quiz 2 (53 MCQs)

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1. The sulphuric acid turns blue litmus paper into-
2. Metals like zinc and aluminium react with sodium hydroxide to produce ..... gas.
3. Which of the following property is not responsible for copper to be used as electrical conduction wires?
4. Which of these non metals is used for water purification?
5. 9) They are not sonorous and are poorconductors of heat and electricity. Thesematerials are called
6. Which of the following describes why non metals are essential to humans?
7. When sulphur dioxide is dissolved in water sulphric acid is formed
8. Which element can displace copper from the copper sulphate solution?
9. Solids at room temperature
10. Silver is the most reactive Metal
11. What is the property that makes metals shine called?
12. The key to reducing air pollution is to control .....
13. Carries heat or electiricity
14. 5) Metals are ..... conductors of heat and .....
15. Metal + Acid = ..... + Hydrogen
16. When sulphur reacts with oxygen, the sulphur oxide formed is ..... in nature.
17. When zinc reacts with dilute sulphuric acid, a salt is formed with the release of a gas. The gas produced during this puts off a burning candle with a pop sound. The gas evolved during this reaction is:
18. Examples of non-metals.
19. Non-metals react with oxygen to produce non-metallic oxides which are
20. Non-metal used in purple colour solutions which is applied on wounds as an antiseptic
21. 2) What is the symbol of Arsenic?
22. Overall which are more useful
23. Which of the following metal burns with a dazzling white flame?
24. Materials around us can be classified into
25. One metal displaces another metal from its compound in aqueous solution
26. Which of the following can be beaten into thin sheets?
27. Which of the following is the only metal found in liquid state at room temperature?
28. Some substances that cause ..... air pollution, such as dust and pet hair, bother only those people who are sensitive to them.
29. Hydrogen, Helium, and Fluorine are all listed as-
30. Which among the following is ductile?
31. Property of metals by virtue of which these are able to be drawn into wire is
32. Hardin Electric Corporation is designing a new product that conducts electricity and can be made into thin sheets. Which material would BEST fit their needs?
33. Non metals are usually soft and dull
34. Which non-metal exists as liquid state at room temperature?
35. What is the healthy pH range in a water supply?
36. Two elements X and Y are reacted with oxygen to form their respective oxides. They are then dissolved in water. Element X forms a hydroxide which is basic in nature. Element Y forms an acid. What can elements X and Y be classified as?
37. All metal oxides are ..... in nature.
38. ..... is a thick, brownish haze formed when certain gases in the air react with sunlight.
39. Nitrogen appears to be .....
40. Where would the given set of elements i.e. Sodium and phosphorous be used?
41. A purple-colored non-metal forms a brown solution in alcohol which is applied on wounds as an antiseptic. Name the non-metal
42. Substance X reacts with dilute Hydrochloric acid violently, Y reacts slowly while Z does not react at all. X, Y and Z could be respectively
43. On burning, metals react with oxygen to produce metal oxides which are basic in nature
44. You are given a solution of iron sulphate. Which of the following do you think cannot displace iron from iron sulphate?
45. Name two major non-metals which are present in fertilisers and enhance the growth of plants
46. 7)The property of metal by which it canbe drawn into wires is called
47. ..... is a soft metal
48. Sewage dropped by factories or oil spills by the huge ships are one of the most causes of .....
49. 6)Generally, non-metals react with acids
50. Which of the following is NOT an example of a physical property of metals?
51. A result of using radioactive elements from atomic enery stations.
52. A reaction in which a more reactive metal replaces a less reactive metal from its salt solution is called a/an ..... reaction.
53. Magnesium on reacting with oxygen gives .....
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