ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

00:00
Question # 1

Fraction of the decaying atoms per unit time is called

Question # 2

β-particles are easily deflected by collisions than heavy

Question # 3

The figure 1.007276μ shows the mass of an:

Question # 4

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 5

Examples of moderators used in a fission reactor is/are:

Question # 6

The rate of decay of a radioactive substance

Question # 7

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 8

Neutron was suggested to be in the nucleus by:

Question # 9

Mass of proton is of order of

Question # 10

Radioactivity was discovered by

Question # 11

Rutherford performed an experiment on nuclear reactions in:

Question # 12

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 13

Different radioactive material have

Question # 14

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 15

Radioactivity

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
2 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
3 The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
4 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
5 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
6 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
7 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
8 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
9 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
10 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years

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