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

Which of the following material has longer half life

Question # 2

Which of these is not a radiation detector

Question # 3

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

Question # 4

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

Question # 5

Charge on neutron is

Question # 6

Neutron was discovered in

Question # 7

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

Question # 8

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

Question # 9

Neutron was disvovered by:

Question # 10

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

Question # 11

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

Question # 12

The chemical behaviour of an atom is determined by

Question # 13

Three quarks make:

Question # 14

The unit of decay constant is

Question # 15

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

Question # 16

Radiation detector are used to

Question # 17

Neutron was suggested to be in the nucleus by:

Question # 18

β-particles are easily deflected by collisions than heavy

Question # 19

Radium was discovered by:

Question # 20

There is present in paraffin a large amount of:

Question # 21

The number if neutrons in the nucleus of 92U235are

Question # 22

The nucleus/nuclei of hydrogen is/are:

Question # 23

The number of protons inside a nucleus is called

Question # 24

Binding energy per nucleus is

Question # 25

The most abundant isotope of neon is

Question # 26

Which are not the elementary particles?

Question # 27

The penetration power ofβ-particle is

Question # 28

The half life of uranium-238 is

Question # 29

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

Question # 30

Neutrons are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
2 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
3 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
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 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
6 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
7 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these
8 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
9 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
10 The rate of decay of a radioactive substance
A. decrease exponentially with time
B. decreases linearly with time
C. increases linearly with time
D. increases exponentially with time

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