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Chapter 17 - Atomic and Nuclear Physics - 2
1.
Nuclear fission was done by Ottohann and Strassmann in
a) 1940
b) 1938
c) 1935
d) 1934
2.
The mass of a body from which 1.35 *10^15 J of energy obtained is
a) 15 *10
-4
Kg
b) 15 *10
-3
Kg
c) 150 *10
-4
Kg
d) 1.5 *10
-3
Kg
3.
When a neutron emits a Beta particle, it changes into a proton so the charge of the new element is greater by
a) two units
b) zero units
c) one unit
d) three units
4.
Match the column..........................................isotope
a) beta rays
b) nucleons
c) alpha, beta and gamma rays
d) gamma rays
5.
Match the column..........................................radioactivity
a) atom
b) gamma rays
c) alpha, beta and gamma rays
d) beta rays
6.
Match the column..........................................1 cm thick sheet of aluminium
a) gamma rays
b) alpha rays
c) atom
d) beta rays
7.
Match the column..........................................3 *10^8 m/s
a) gamma rays
b) alpha rays
c) beta rays
d) atom
8.
Match the column..........................................smallest part of element
a) atom
b) solar energy
c) gamma rays
d) alpha rays
9.
Match the column..........................................electromagnetic waves emitted by the nucleus
a) alpha rays
b) unstable nuclei
c) gamma rays
d) solar energy
10.
Match the column..........................................least effect on photographic plate
a) alpha rays
b) solar energy
c) radioactive radiation
d) unstable nuclei
11.
Match the column..........................................fusion of four hydrogen nuclei
a) solar energy
b) radioactive radiation
c) unstable nuclei
d) radio isotopes
12.
Match the column..........................................atomic no grater than 82
a) radio isotopes
b) 25%
c) unstable nuclei
d) radioactive radiation
13.
Match the column..........................................unhealthy seeds
a) 25%
b) radio isotopes
c) fission reaction
d) radioactive radiation
14.
Match the column..........................................curing some fatal diseases
a) fission reaction
b) radio isotopes
c) fusion reaction
d) 25%
15.
Match the column..........................................after a time 2T, the number of aotms
a) fission reaction
b) radiation hazards
c) fusion reaction
d) 25%
16.
Match the column..........................................uranium
a) alpha rays
b) fission reaction
c) radiation hazards
d) fusion reaction
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