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MCQ Science and Technology Class 9 Chapter 13 Maharashtra Board

Carbon : An important element

1. What is the symbol of the carbon element?

Question 1 of 20

2. What is the atomic number of carbon?

Question 2 of 20

3. What is the atomic mass of carbon?

Question 3 of 20

4. What is the electron configuration of carbon?

Question 4 of 20

5. What is the valency of carbon?

Question 5 of 20

6. What type of element is carbon?

Question 6 of 20

7. In which form is carbon found in the free state?

Question 7 of 20

8. What is the main element in all organic compounds?

Question 8 of 20

9. What are compounds obtained from plants and animals called?

Question 9 of 20

10. Who synthesized urea from ammonium cyanate?

Question 10 of 20

11. What is the Latin word from which the name ‘carbon’ is derived?

Question 11 of 20

12. What is the approximate percentage of carbon in the earth’s crust?

Question 12 of 20

13. In what form is carbon present in the atmosphere?

Question 13 of 20

14. What property allows elements like carbon to exist in different forms with the same chemical properties but different physical properties?

Question 14 of 20

15. Which of the following is a crystalline allotrope of carbon?

Question 15 of 20

16. Where are diamonds mainly found in India?

Question 16 of 20

17. What is the hardest natural substance known?

Question 17 of 20

18. What is the density of diamond?

Question 18 of 20

19. What is the melting point of diamond?

Question 19 of 20

20. What happens when a diamond is heated at 800°C in the presence of oxygen?

Question 20 of 20

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