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WorksheetsNuclear Transformations
Total questions: 15
Worksheet time: 3mins
The existence of neutrino was proposed in order to explain
Alpha decay
Beta decay
Gamma decay
Electron capture
What happens to the half-life of a radioactive substance as it decays?
Increases
Decreases
Remains constant
None of these
The waves in the electromagnetic spectrum with the highest frequencies are ______.
X rays
Microwaves
Gamma rays
Uv rays
Unit of nuclear scattering cross section
Angstrom
Barn
Hertz
Fm
Spin of anti neutrino
1/2
-1/2
1
-1
In CM frame , the velocity of CM is
+ve
-ve
0
Infinite
A nuclear reaction is spontaneous if its Q value is
0
<0
>0
Infinite
The average energy released per nucleons in a fission reaction is___MeV
2
20
2000
200
A long lived excited nucleus is known an
Isobar
Isomer
Isotope
Isotone
A Thermonuclear reaction is also called
Nuclear fusion
Nuclear scattering
1Nuclear fission
Compound Reaction
The catalyst in CNO cycle is
Nitrogen
Oxygen
Carbon
Hydrogen
The avg energy required to start He fusion in stars is 10^---°K
10
8
7
9
The source of Poloidal field in Tokamak is
External current
Internal current
Plasma current
None of these
Which of the following is a good nuclear fuel
Np-239
Pu-239
Th-239
U-239
A 10 MeV alpha particle strikes a stationary O-16 target. The KE of the particle relative to the CM is ---MeV
6
4
12
8
