ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

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

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ECAT Pre General Science Physics Chapter 21 Nuclear Physics

00:00
Question # 1

The number of isotopes of hydrogen are

Question # 2

The diameter of an atom is of the order

Question # 3

Proton was discovered by Rutherford in

Question # 4

Neutron was discovered in

Question # 5

Marie curie and Pierre curie discovered:

Question # 6

Neutron was suggested to be in the nucleus by:

Question # 7

The half lie of radium-226 is

Question # 8

The chemical behaviour of an atom is determined by

Question # 9

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 10

Alfa particles are

Question # 11

γ-rays behave like a particle because they explain the

Question # 12

The rate of decay of a radioactive substance

Question # 13

In radio-active decay, the original element which disintegrate to another element is called

Question # 14

The amount of energy equivalent to 1 a.m.u is

Question # 15

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

Question # 16

The penetration power ofβ-particle is

Question # 17

The rate of decay of radioactive substance

Question # 18

Radium was discovered by:

Question # 19

The reciprocal of decay constant λ of a radioactive material is:

Question # 20

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 21

Radioactivity

Question # 22

Which of these is not a radiation detector

Question # 23

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 24

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

Question # 25

Which of the following material has smaller has life

Question # 26

Phenomenon of radioactivity is due to disintegration of

Question # 27

Beta particles are

Question # 28

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 29

1 amu is equal to

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
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 the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
4 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
5 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
6 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
7 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
8 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
9 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
10 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these

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