MCQ Science Curiosity Chapter 8 Class 8 CBSE Board

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Nature of Matter: Elements, Compounds, and Mixtures

1. Which of the following is a compound?

Question 1 of 20

2. Which material is described as the lightest on earth?

Question 2 of 20

3. What is a potential use of graphene aerogel?

Question 3 of 20

4. What are most minerals classified as?

Question 4 of 20

5. Which mineral is used to make talcum powder?

Question 5 of 20

6. What is Dhokra art made from?

Question 6 of 20

7. What is the main process in Dhokra art?

Question 7 of 20

8. Which of the following is not considered matter?

Question 8 of 20

9. In the reaction A + B → C, if A and B cannot be broken down into simpler substances, what are they?

Question 9 of 20

10. Why is air considered a mixture?

Question 10 of 20

11. Why does water have different properties from hydrogen and oxygen?

Question 11 of 20

12. Which set correctly matches examples of pure substances?

Question 12 of 20

13. What is iron oxide classified as in the reaction of iron with moist air?

Question 13 of 20

14. What is magnesium oxide classified as?

Question 14 of 20

15. Which of the following is a mixture?

Question 15 of 20

16. What is formed when iron filings and sulfur powder are heated?

Question 16 of 20

17. Can a substance be both an element and a compound?

Question 17 of 20

18. What would happen if water were a mixture of hydrogen and oxygen?

Question 18 of 20

19. What is Gas A in Fig.8.24 (reaction with iron filings and dilute hydrochloric acid)?

Question 19 of 20

20. How is gold classified as both a mineral and a metal?

Question 20 of 20


 

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