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

Rutherford performed an experiment on nuclear reactions in:

Question # 2

Different radioactive material have

Question # 3

The isotope/s of hydrogen is /are:

Question # 4

Phenomenon of radioactivity is due to disintegration of

Question # 5

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

Question # 6

The half life of radioactive substances depends upon

Question # 7

Radium was discovered by:

Question # 8

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

Question # 9

A curie represents a very strong source of

Question # 10

Radiation detector are used to

Question # 11

A pair of quark and antiquark makes a:

Question # 12

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

Question # 13

The number if neutrons in the nucleus of 92U235are

Question # 14

U-238 present in the natural uranium is about:

Question # 15

The number of isotopes of hydrogen are

Question # 16

Which of the following material has smaller has life

Question # 17

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

Question # 18

The penetration power ofβ-particle is

Question # 19

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

Question # 20

Neutrons are

Question # 21

Three quarks make:

Question # 22

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

Question # 23

Neutron was disvovered by:

Question # 24

For Protium, the mass defect is:

Question # 25

1 amu is equal to

Question # 26

Beta particles are

Question # 27

Which of these is not a radiation detector

Question # 28

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

Question # 29

Pair production take place when energy ofγ-rays photon is

Question # 30

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
2 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
3 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
4 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
5 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
6 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
7 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
8 Alfa , beta and gamma rays are emitted from a radio-active substance
A. spontaneously
B. when it is heated
C. when it is exposed to light
D. When it interacts with the other particle
9 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
10 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%

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