MCQ Class 9 Science Exploration Chapter 8 Journey Inside the Atom

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1. What are atoms considered as?

Question 1 of 20

2. Who proposed the concept of ‘parmanu’?

Question 2 of 20

3. What does ‘atomos’ mean?

Question 3 of 20

4. Dalton’s atomic theory was based on:

Question 4 of 20

5. Cathode rays consist of:

Question 5 of 20

6. Charge of an electron is taken as:

Question 6 of 20

7. Thomson’s model is also called:

Question 7 of 20

8. In Thomson’s model, electrons are:

Question 8 of 20

9. Rutherford’s experiment used:

Question 9 of 20

10. Most alpha particles passed through foil because:

Question 10 of 20

11. The nucleus is:

Question 11 of 20

12. Rutherford’s model is called:

Question 12 of 20

13. Diameter of nucleus is about:

Question 13 of 20

14. Rutherford’s model failed to explain:

Question 14 of 20

15. Proton carries:

Question 15 of 20

16. Atom is neutral because:

Question 16 of 20

17. Bohr proposed electrons move in:

Question 17 of 20

18. First shell is called:

Question 18 of 20

19. Energy increases as distance from nucleus:

Question 19 of 20

20. Neutron was discovered by:

Question 20 of 20


 

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