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

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

Question # 2

Binding energy per nucleus is

Question # 3

Different radioactive material have

Question # 4

When certain nucleus emits anα particle, its mass number:

Question # 5

The rate of decay of radioactive substance

Question # 6

Rutherford performed an experiment on nuclear reactions in:

Question # 7

γ-rays are

Question # 8

Beta particles are

Question # 9

When a nucleus emits an alpha particles, its charge number decreases by

Question # 10

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

Question # 11

Radioactivity

Question # 12

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 13

U-238 present in the natural uranium is about:

Question # 14

There is present in paraffin a large amount of:

Question # 15

β-particles are easily deflected by collisions than heavy

Question # 16

Pair production take place when energy ofγ-rays photon is

Question # 17

For Protium, the mass defect is:

Question # 18

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

Question # 19

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

Question # 20

The number if neutrons in the nucleus of 92U235are

Question # 21

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

Question # 22

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 23

Neon gas have three isotopes whose atomic numbers are

Question # 24

Alfa particles are

Question # 25

The unit of decay constant is

Question # 26

Radiation detector are used to

Question # 27

The nucleus/nuclei of hydrogen is/are:

Question # 28

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 29

Which of the following material has longer half life

Question # 30

Neutron was disvovered by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
2 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
3 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
4 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
5 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
6 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
7 After alpha decay the atomic number of the atom
A. increase by four
B. decreases by two
C. increases by two
D. decrease by four
8 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
9 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
10 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle

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