Science Quiz Based on NCERT

1. Proton was discovered by:

A. Rutherford

B. Goldstein

C. Chadwick

D. J.J. Thomson

2. Canal rays are _______________

A. negative charged particles

B. positive charged particles

C. beam of neutrons

D. gamma radiation

3. α-particles are ___________

A. negative charged particles

B. positive charged particles

C. beam of neutrons

D. gamma radiation

4.  The most electronegative element is?

A. Iodine

B. Bromine

C. Florine

D. Chlorine

5. The nature of positive rays depends on?

A. The nature of residual gas

B. The nature of electrode

C. The nature of discharge tube.

D. All of above.

6. Which one of the following will have the maximum charge/mass ratio?

A. electron

B. proton

C. neutron

D. α-particle

7. In an atom, the mass number of an atom is equal to the number of _________________.

A. nucleons

B. protons

C. electrons

D. neutrons

8. Number of neutrons present in Hydrogen atom is _______.

A. 0

B. 1

C. 2

D. 3

9. Protium, Deutrium and Tritium are isotopes of ____________.

A. Rhodium

B. Sodium

C. Hydrogen

D. Helium

10. Neutrons were discovered by?

A. J.J. Thomson

B. Chadwick

C. Dalton

D. Faraday

Answers will be provided soon...