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

There is present in paraffin a large amount of:

Question # 2

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

Question # 3

The rate of decay of a radioactive substance

Question # 4

1 amu is equal to.

Question # 5

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 6

The number of isotopes of hydrogen are

Question # 7

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 8

The chemical properties of all the isotopes of an elements are

Question # 9

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 10

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

Question # 11

Neutron was discovered in

Question # 12

The emission of radiations take place in elements, having charge number greater than

Question # 13

Marie curie and Pierre curie discovered:

Question # 14

Beta particles are

Question # 15

Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
2 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
3 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
4 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
5 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
6 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
7 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
8 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
9 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
10 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes

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