Class 8 Science Chapter 4 Materials Metals And Non Metals Quiz 5 (12 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. 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

Correct Answer: D) Potassium, Aluminium, Copper.

2. On burning, metals react with oxygen to produce metal oxides which are basic in nature

Correct Answer: A) True.

3. You are given a solution of iron sulphate. Which of the following do you think cannot displace iron from iron sulphate?

Correct Answer: C) Copper.

4. Name two major non-metals which are present in fertilisers and enhance the growth of plants

Correct Answer: A) Nitrogen and phosphorous.

5. 7)The property of metal by which it canbe drawn into wires is called

Correct Answer: A) Ductility.

6. ..... is a soft metal

Correct Answer: C) Sodium.

7. Sewage dropped by factories or oil spills by the huge ships are one of the most causes of .....

Correct Answer: B) Water pollution.

8. 6)Generally, non-metals react with acids

Correct Answer: B) False.

9. Which of the following is NOT an example of a physical property of metals?

Correct Answer: B) Solids, liquids, or gas.

10. A result of using radioactive elements from atomic enery stations.

Correct Answer: B) Radiation pollution.

11. A reaction in which a more reactive metal replaces a less reactive metal from its salt solution is called a/an ..... reaction.

Correct Answer: B) Displacement.

12. Magnesium on reacting with oxygen gives .....

Correct Answer: C) Magnesium Peroxide.