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

Nucleus of a hydrogen atom may contain:

Question # 2

Mass of proton is of order of

Question # 3

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

Question # 4

The number of isotopes of hydrogen are

Question # 5

The nucleus left after the emission of some radiation is called:

Question # 6

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

Question # 7

Rutherford performed an experiment on nuclear reactions in:

Question # 8

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

Question # 9

The diameter of an atom is of the order

Question # 10

β-particles are easily deflected by collisions than heavy

Question # 11

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

Question # 12

The half life of uranium-238 is

Question # 13

A pair of quark and antiquark makes a:

Question # 14

γ-rays behave like a particle because they explain the

Question # 15

Structure of the nucleus was explained by

Question # 16

Charge on neutron is

Question # 17

An alpha particle has a charge of

Question # 18

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 19

1 amu is equal to.

Question # 20

There is present in paraffin a large amount of:

Question # 21

Proton was discovered by Rutherford in

Question # 22

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

Question # 23

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

Question # 24

The chemical properties of an element depends upon the number of

Question # 25

The unit of decay constant is:

Question # 26

Radioactivity was discovered by

Question # 27

The penetration power ofβ-particle is

Question # 28

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 29

The total charge of any nucleus is given as

Question # 30

Curie is a unit of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
3 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
4 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
5 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
6 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
7 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
8 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
9 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
10 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e

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