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

An alpha particle has a charge of

Question # 2

Rutherford performed an experiment on nuclear reactions in:

Question # 3

Mass of neutron is

Question # 4

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

Question # 5

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

Question # 6

The chemical properties of all the isotopes of an elements are

Question # 7

The counter, which also provides the power to the G.M. tube is called:

Question # 8

The chemical properties of an element depends upon the number of

Question # 9

The most abundant isotope of neon is

Question # 10

Which of the following material has longer half life

Question # 11

Neutron was suggested to be in the nucleus by:

Question # 12

When certain nucleus emits aβ-particles, is mass number:

Question # 13

The diameter of an atom is of the order

Question # 14

Neutron was discovered in

Question # 15

Structure of the nucleus was explained by

Question # 16

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

Question # 17

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

Question # 18

Mass of proton is

Question # 19

The nucleus/nuclei of hydrogen is/are:

Question # 20

γ-rays behave like a particle because they explain the

Question # 21

A curie represents a very strong source of

Question # 22

The total charge of any nucleus is given as

Question # 23

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 24

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

Question # 25

Examples of moderators used in a fission reactor is/are:

Question # 26

Beta particles are

Question # 27

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 28

Marie curie and Pierre curie discovered:

Question # 29

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
2 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
3 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
4 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
5 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
6 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
7 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
8 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
9 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
10 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives

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