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

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Question # 1

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

Question # 2

Which of the following material has longer half life

Question # 3

1 amu is equal to

Question # 4

The unit of decay constant is:

Question # 5

Marie curie and Pierre curie discovered:

Question # 6

β-particles are easily deflected by collisions than heavy

Question # 7

Gamma rays consist of steam of

Question # 8

Neon gas have three isotopes whose atomic numbers are

Question # 9

The energy acquired by a mass of 1g moving with the speed of light is

Question # 10

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Question # 11

Rutherford performed an experiment on nuclear reactions in:

Question # 12

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

Question # 13

Rate of decay is actually described by.

Question # 14

According to Rutherford atomic model, the positive charge in an atom

Question # 15

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 16

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

Question # 17

Which of these is not a radiation detector

Question # 18

γ-rays behave like a particle because they explain the

Question # 19

Nucleon means:

Question # 20

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

Question # 21

Mass of proton is of order of

Question # 22

The rate of decay of radioactive substance

Question # 23

Radioactivity was discovered by

Question # 24

In wilson cloud chamber, the air becomes saturated with:

Question # 25

Radium was discovered by:

Question # 26

Which of the following material has smaller has life

Question # 27

The total charge of any nucleus is given as

Question # 28

The most abundant isotope of neon is

Question # 29

Fraction of the decaying atoms per unit time is called

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
2 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
3 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
4 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
5 Nucleus of a hydrogen atom may contain:
A. One neutron only
B. Two protons and one neutron
C. Two protons and two neutrons
D. Aany of above
6 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
7 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
8 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
9 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
10 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2

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