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

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

Question # 2

In 1932 Chadwick discovered

Question # 3

Different radioactive material have

Question # 4

Neutron was discovered in

Question # 5

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

Question # 6

How many isotopes of helium are present?

Question # 7

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 8

Radium was discovered by:

Question # 9

The range ofβ-particle in air is greater than that ofα-particle by

Question # 10

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

Question # 11

The figure 1.007276μ shows the mass of an:

Question # 12

Proton was discovered by Rutherford in

Question # 13

The number of isotopes of hydrogen are

Question # 14

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

Question # 15

Neutrons are

Question # 16

The diameter of an atom is of the order

Question # 17

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

Question # 18

Marie curie and Pierre curie discovered:

Question # 19

Neutron was suggested to be in the nucleus by:

Question # 20

The chemical properties of all the isotopes of an elements are

Question # 21

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

Question # 22

The half lie of radium-226 is

Question # 23

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 24

1 amu is equal to

Question # 25

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

Question # 26

In wilson cloud chamber, the air becomes saturated with:

Question # 27

Charge on neutron is

Question # 28

A mass spectrograph sort out

Question # 29

For Protium, the mass defect is:

Question # 30

Radiation detector are used to

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
2 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
3 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
4 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
5 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
6 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
7 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
8 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
9 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
10 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C

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