MCQ Class 9 Science Exploration Chapter 8 Journey Inside the Atom

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1. Neutron has charge:

Question 1 of 20

2. Mass of atom mainly comes from:

Question 2 of 20

3. Atomic number represents:

Question 3 of 20

4. Mass number equals:

Question 4 of 20

5. Symbol Z represents:

Question 5 of 20

6. Symbol A represents:

Question 6 of 20

7. Maximum electrons in K-shell:

Question 7 of 20

8. Maximum electrons in L-shell:

Question 8 of 20

9. Outermost shell can hold maximum:

Question 9 of 20

10. Electrons fill shells:

Question 10 of 20

11. Valence shell is:

Question 11 of 20

12. Valency depends on:

Question 12 of 20

13. Octet means:

Question 13 of 20

14. Sodium valency is:

Question 14 of 20

15. Oxygen valency is:

Question 15 of 20

16. Isotopes have same:

Question 16 of 20

17. Isotopes differ in:

Question 17 of 20

18. Chemical properties of isotopes are:

Question 18 of 20

19. Example of isotope of hydrogen:

Question 19 of 20

20. Isobars have same:

Question 20 of 20


 

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