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

Radioactivity

Question # 2

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

Question # 3

1 amu is equal to

Question # 4

γ-rays behave like a particle because they explain the

Question # 5

Which are not the elementary particles?

Question # 6

Phenomenon of radioactivity is due to disintegration of

Question # 7

Gamma rays consist of steam of

Question # 8

How many isotopes of helium are present?

Question # 9

When a nucleus emits an alpha particles, its charge number decreases by

Question # 10

The chemical properties of all the isotopes of an elements are

Question # 11

A pair of quark and antiquark makes a:

Question # 12

The number of isotopes of hydrogen are

Question # 13

For Protium, the mass defect is:

Question # 14

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

Question # 15

The range of particle depends upon the factor

Question # 16

The figure 1.007276μ shows the mass of an:

Question # 17

The most abundant isotope of neon is

Question # 18

In wilson cloud chamber, the air becomes saturated with:

Question # 19

Nucleus of a hydrogen atom may contain:

Question # 20

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

Question # 21

Rutherford performed an experiment on nuclear reactions in:

Question # 22

Fraction of the decaying atoms per unit time is called

Question # 23

Neutron was discovered in

Question # 24

A mass spectrograph sort out

Question # 25

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 26

An alpha particle has a charge of

Question # 27

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

Question # 28

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

Question # 29

The half lie of radium-226 is

Question # 30

Radium was discovered by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
2 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
3 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
4 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
5 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
6 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
7 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
8 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
9 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
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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