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Chapter 18 Atomic and Nuclear Physics-26
1.
Which of the following element has half-life of 4.51 x 10
9
Years?
a) Hydrogen
b) Iodine
c) Carbon
d)
238
92
U
2.
What is the half-life of plutonium (mass number of 236)?
a) 7.1 minutes
b) 12.3 days
c) 2.85 years
d) 12.3 years
3.
Which of the following radiations are produced by plutonium (mass number 236) transmutation?
a) β & γ
b) β
c) α
d) α & γ
4.
What is the half-life of
236
94
Pu?
a) 12.3 days
b) 7.1 minutes
c) 12.3 years
d) 2.85 years
5.
Which of the following element has half-life of 2.85 years?
a) Iodine
b) Hydrogen
c) Carbon
d)
236
94
Pu
6.
What is the half-life of plutonium (mass number of 242)?
a) 7.1 minutes
b) 12.3 days
c) 12.3 years
d) 3.79 x 10
5
years
7.
What is the half-life of
242
94
Pu?
a) 12.3 days
b) 7.1 minutes
c) 12.3 years
d) 3.79 x 10
5
years
8.
Co-60 emits high energy …………. radiation?
a) Gamma
b) Alpha
c) Beta and gamma
d) Beta
9.
Which of the following element has half-life of 3.79 x 10
5
Years?
a) Iodine
b) Hydrogen
c)
242
94
Pu
d) Carbon
10.
Which of the following radiations are produced by plutonium (mass number 242) transmutation?
a) α & γ
b) α
c) β
d) β & γ
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