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

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Question # 1

Neon gas have three isotopes whose atomic numbers are

Question # 2

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

Question # 3

γ-rays are

Question # 4

Electrons are

Question # 5

The most abundant isotope of neon is

Question # 6

Which of the following material has longer half life

Question # 7

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 8

Proton was discovered by Rutherford in

Question # 9

The rate of decay of a radioactive substance

Question # 10

Phenomenon of radioactivity is due to disintegration of

Question # 11

Mass of proton is

Question # 12

Neutrons are

Question # 13

A particle having the mass of electron and charge of a proton is called a

Question # 14

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 15

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 16

Nucleus of a hydrogen atom may contain:

Question # 17

Gamma rays consist of steam of

Question # 18

Binding energy per nucleus is

Question # 19

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

Question # 20

The number of isotopes of hydrogen are

Question # 21

Mass of proton is of order of

Question # 22

Neutron was disvovered by:

Question # 23

Structure of the nucleus was explained by

Question # 24

The total charge of any nucleus is given as

Question # 25

An alpha particle has a charge of

Question # 26

The unit of decay constant is

Question # 27

Which of the following material has smaller has life

Question # 28

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

Question # 29

Radioactivity was discovered by:

Question # 30

The missing mass which is converted to energy in the formation of nucleus, is called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
2 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
3 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
4 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
5 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
6 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
7 Alfa , beta and gamma rays are emitted from a radio-active substance
A. spontaneously
B. when it is heated
C. when it is exposed to light
D. When it interacts with the other particle
8 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
9 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
10 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these

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