MCQs

SA Questions and MCQs Chapter 2.2
Structure of atom

Short QAs
1. Who measured the charge to mass ratio of electron?
2. In which year did Thomson determine the e/m ratio?
3. What is the value of charge to mass ratio of electron?
4. What happens when only electric field is applied in cathode ray tube?
5. What happens when only magnetic field is applied?
6. On what factors does electron deflection depend?
7. How does mass affect deflection of electrons?
8. Who determined the charge on electron?
9. Which experiment was used to determine charge on electron?
10. What is the charge on electron?
11. What is the mass of electron?
12. What are canal rays?
13. How do canal rays differ from cathode rays?
14. Which particle is the lightest positive ion?
15. From which gas was proton obtained?
16. In which year was proton identified?
17. Who discovered neutron?
18. In which year was neutron discovered?
19. How was neutron discovered?
20. What is the charge on neutron?
21. What is meant by quantization of charge?
22. Write the formula for quantization of charge.
23. Which particle is negatively charged?
24. Which particle is positively charged?
25. Which subatomic particle is electrically neutral?