Physics Quiz | Radioactivity | General Knowledge

Physics Quiz (Radioactivity)

1. Radius of nucleus ranges from

A. 10 ^-15 m
B. 10 ^-15 m  to 10^-14m 
C. 10^-10 m
D. 10^-10 m to 10^-6 m 

... Answer is B.
10 ^-15 m to 10^-14m

2. Which of the following is determined by the number of protons in an atom?

A. chemical properties
B. physical properties
C. magnetic properties
D. electrical properties

... Answer is A.
chemical properties

3. In β+ decay, an UP quark becomes

A. a strange quark
B. a simple quark
C. a down quark
D. an anti-quark

... Answer is C.
a down quark

4. Most of the space in an atom is

A. filled with positive charge
B. empty
C. filled with negative charge
D. filled with neutrons

... Answer is B.
empty

5. What is a proton made up of?

A. one up quark and two down quarks
B. an up quark and down antiquark
C. two up quarks and a down quark
D. strange quark and an anti-strange quark

... Answer is C.
two up quarks and a down

6. Neutrinos have electric charge of

A. zero
B. 1
C. 2
D. 3

... Answer is A.
zero

7. β- radiations are simply

A. protons
B. neutrons
C. electrons
D. muons

... Answer is C.
electrons

8. In a nuclear process, the quantity conserved is

A. mass-energy
B. momentum
C. mass only
D. energy only

... Answer is C.
mass-energy

9. What is a specific combination of protons and neutrons in a nucleus called?

A. nucleons
B. nuclide
C. neutrino
D. nucleolus

... Answer is B.
nuclide

10. In β+ decay, the nucleon number is

A. conserved
B. not conserved
C. unstable
D. stable

... Answer is A.
conserved

11. Particles that are un affected by strong nuclear force are

A. protons
B. leptons
C. neutrons
D. bosons

... Answer is B.
leptons

12. Number of isotopes neon has is

A. 2
B. 4
C. 3
D. 5

... Answer is C.
3

13. When was the phenomena of radioactivity discovered by Henri Becquerel?

A. in 1896
B. in 1895
C. in 1894
D. in 1893

... Answer is A.
in 1896

14. Radiations emitted by radioactive substances is

A. alpha
B. beta
C. gamma
D. all of above

... Answer is D.
all of above

15. Elements undergo radioactive decay when proton number becomes greater than

A. 50
B. 40
C. 83
D. 73

... Answer is C.
83