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

Radioactivity was discovered by:

Question # 2

Neon gas have three isotopes whose atomic numbers are

Question # 3

Rate of decay is actually described by.

Question # 4

The most abundant isotope of neon is

Question # 5

The nucleus/nuclei of hydrogen is/are:

Question # 6

A particle having the mass of electron and charge of a proton is called a

Question # 7

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

Question # 8

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

Question # 9

Rutherford performed an experiment on nuclear reactions in:

Question # 10

The rate of decay of a radioactive substance

Question # 11

Mass of proton is of order of

Question # 12

Which are not the elementary particles?

Question # 13

The number if neutrons in the nucleus of 92U235are

Question # 14

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

Question # 15

Different radioactive material have

Question # 16

Gamma rays consist of steam of

Question # 17

Binding energy per nucleus is

Question # 18

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

Question # 19

Electrons are

Question # 20

For Protium, the mass defect is:

Question # 21

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

Question # 22

U-238 present in the natural uranium is about:

Question # 23

Nucleon means:

Question # 24

A mass spectrograph sort out

Question # 25

An alpha particle has a charge of

Question # 26

Alfa particles are

Question # 27

1 amu is equal to

Question # 28

The number of protons inside a nucleus is called

Question # 29

Radioactivity is

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
2 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
3 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
4 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
5 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
6 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
7 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
8 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
9 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
10 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium

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