ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

A curie represents a very strong source of

Question # 2

The number of all the protons and neutrons in a nucleus is known as

Question # 3

The number of isotopes of hydrogen are

Question # 4

Radiation detector are used to

Question # 5

Neutron was discovered in

Question # 6

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

Question # 7

Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called

Question # 8

A pair of quark and antiquark makes a:

Question # 9

Radioactivity was discovered by:

Question # 10

Marie curie and Pierre curie discovered:

Question # 11

Nucleus consists of

Question # 12

The energy acquired by a mass of 1g moving with the speed of light is

Question # 13

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

Question # 14

The half lie of radium-226 is

Question # 15

In 1932 Chadwick discovered

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
2 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
3 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
4 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
5 The half life of uranium-238 is
A. 6.2 x 109years
B. 4.5 x 109days
C. 4.5 x 109years
D. 1.3 x 106years
6 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
7 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
8 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
9 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
10 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1

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