ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Question # 1

The figure 1.007276μ shows the mass of an:

Question # 2

Marie curie and Pierre curie discovered:

Question # 3

Alfa particles are

Question # 4

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

Question # 5

Rutherford performed an experiment on nuclear reactions in:

Question # 6

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

Question # 7

Which of the following material has smaller has life

Question # 8

The range of particle depends upon the factor

Question # 9

1 amu is equal to.

Question # 10

U-238 present in the natural uranium is about:

Question # 11

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

Question # 12

For Protium, the mass defect is:

Question # 13

Neon gas have three isotopes whose atomic numbers are

Question # 14

Heavy water is made of one oxygen atom and two atoms of:

Question # 15

How many isotopes of helium are present?

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
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 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
4 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
5 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
6 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
7 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
8 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction
9 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
10 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)

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