Structure of Atom – Discovery of Subatomic Particles, Thomson & Rutherford Models

Grade 11 Chemistry — Structure of Atom – Discovery of Subatomic Particles, Thomson & Rutherford Models: 25 practice questions with instant scoring and explanations.

1. Cathode rays were discovered by:
2. The charge on an electron is:
3. The charge-to-mass ratio (e/m) of electron is:
4. Mass of one electron is approximately:
5. Anode rays (canal rays) were discovered by:
6. The proton was discovered by:
7. The neutron was discovered by:
8. Mass of a proton is approximately:
9. Thomson's model of atom is often called:
10. In Rutherford's α-particle scattering experiment, most α-particles:
11. Rutherford concluded that the atom has a:
12. The size of the nucleus compared to atom is about:
13. An atom of ³⁵Cl has:
14. Isotopes have the same:
15. Isobars have the same:
16. ₁H¹, ₁H², ₁H³ are:
17. ¹⁴₆C and ¹⁴₇N are:
18. A species having same number of neutrons is called:
19. Frequency and wavelength are related by:
20. The energy of a photon is given by:
21. Planck's constant h has value:
22. The threshold frequency in photoelectric effect is:
23. Work function W and threshold frequency ν₀ are related by:
24. Einstein's photoelectric equation: KE_max =
25. Electromagnetic spectrum in order of increasing wavelength: