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

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Question # 1

Neutrons are

Question # 2

Structure of the nucleus was explained by

Question # 3

When certain nucleus emits aβ-particles, is mass number:

Question # 4

Which of the following material has longer half life

Question # 5

Rate of decay is actually described by.

Question # 6

In wilson cloud chamber, the air becomes saturated with:

Question # 7

Nuclei that have the same charge number but different mass number are called

Question # 8

The range of particle depends upon the factor

Question # 9

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

Question # 10

Neutron was discovered by

Question # 11

Charge on neutron is

Question # 12

How much time, theα-particle more massive than an electron

Question # 13

The time required for a radioactive material to decrease in active by one half is called

Question # 14

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 15

The rate of decay of a radioactive substance

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
2 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
3 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
4 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
5 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
6 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
7 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
8 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
9 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
10 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)

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