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Chapter 18 Atomic and Nuclear Physics-25
1.
What is the half-life of
210
84
Po?
a) 12.3 days
b) 138 days
c) 7.1 minutes
d) 12.3 years
2.
Which of the following element has half-life of 138 days?
a) Iodine
b) 21084Po
c) Hydrogen
d) Carbon
3.
What is the half-life of uranium (mass number of 235)?
a) 12.3 days
b) 7.1 minutes
c) 7.1 x 10
8
years
d) 12.3 years
4.
Which of the following radiations are produced by uranium (mass number 235) transmutation?
a) β & γ
b) α & γ
c) α
d) β
5.
What is the half-life of
235
92
U?
a) 7.1 x 10
8
years
b) 12.3 years
c) 7.1 minutes
d) 12.3 days
6.
Which of the following element has half-life of 7.1 x 10
8
Years?
a)
235
92
U
b) Hydrogen
c) Iodine
d) Carbon
7.
What is the half-life of uranium (mass number of 238)?
a) 4.51 x 10
9
years
b) 12.3 years
c) 7.1 minutes
d) 12.3 days
8.
Which of the following radiations are produced by uranium (mass number 238) transmutation?
a) β & γ
b) α
c) β
d) α & γ
9.
What is the half-life of
238
92
U?
a) 12.3 years
b) 12.3 days
c) 7.1 minutes
d) 4.51 x 10
9
years
10.
Which of the following radiations are produced by polonium (mass number 210) transmutation?
a) α & γ
b) α
c) β & γ
d) β
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