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

The counter, which also provides the power to the G.M. tube is called:

Question # 2

A curie represents a very strong source of

Question # 3

Neutron was discovered by

Question # 4

Proton was discovered by Rutherford in

Question # 5

Rutherford performed an experiment on nuclear reactions in:

Question # 6

The chemical behaviour of an atom is determined by

Question # 7

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

Question # 8

Neutrons are

Question # 9

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 10

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

Question # 11

The range ofβ-particle in air is greater than that ofα-particle by

Question # 12

1 amu is equal to.

Question # 13

γ-rays are

Question # 14

The range of particle depends upon the factor

Question # 15

An alpha particle has a charge of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
2 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
3 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
4 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
5 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
6 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
7 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
8 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
9 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1
10 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

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