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

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

Question # 2

The isotope/s of hydrogen is /are:

Question # 3

Radium was discovered by:

Question # 4

Charge on neutron is

Question # 5

γ-rays behave like a particle because they explain the

Question # 6

The unit of decay constant is:

Question # 7

The chemical behaviour of an atom is determined by

Question # 8

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

Question # 9

The most abundant isotope of neon is

Question # 10

U-238 present in the natural uranium is about:

Question # 11

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

Question # 12

Neutron was suggested to be in the nucleus by:

Question # 13

Radiation detector are used to

Question # 14

Radioactivity

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Which of these is not a radiation detector

Question # 19

Proton was discovered by Rutherford in

Question # 20

The range of particle depends upon the factor

Question # 21

The half lie of radium-226 is

Question # 22

Different radioactive material have

Question # 23

The rate of decay of radioactive substance

Question # 24

In wilson cloud chamber, the air becomes saturated with:

Question # 25

Neutrons are

Question # 26

Neutron was discovered in

Question # 27

Nucleus of a hydrogen atom may contain:

Question # 28

Rate of decay is actually described by.

Question # 29

Three quarks make:

Question # 30

γ-rays are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
2 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
3 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
4 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
5 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
6 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
7 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
8 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
9 For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
A. A - Z
B. A + Z
C. Z
D. A
10 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000

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