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

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 2

The chemical properties of an element depends upon the number of

Question # 3

After alpha decay the atomic number of the atom

Question # 4

Structure of the nucleus was explained by

Question # 5

Nucleon means:

Question # 6

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

Question # 7

Which of the following material has smaller has life

Question # 8

The time required for a radioactive material to decrease in active by one half is called

Question # 9

Curie is a unit of

Question # 10

The half lie of radium-226 is

Question # 11

Radium was discovered by:

Question # 12

In wilson cloud chamber, the air becomes saturated with:

Question # 13

When certain nucleus emits aβ-particles, is mass number:

Question # 14

Neon gas have three isotopes whose atomic numbers are

Question # 15

The number of isotopes of hydrogen are

Question # 16

The most abundant isotope of neon is

Question # 17

Examples of moderators used in a fission reactor is/are:

Question # 18

For Protium, the mass defect is:

Question # 19

The reciprocal of decay constant λ of a radioactive material is:

Question # 20

The figure 1.007276μ shows the mass of an:

Question # 21

Neutron was suggested to be in the nucleus by:

Question # 22

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

Question # 23

The diameter of an atom is of the order

Question # 24

Mass of neutron is

Question # 25

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

Question # 26

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 27

The chemical behaviour of an atom is determined by

Question # 28

The penetration power ofβ-particle is

Question # 29

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

Question # 30

Binding energy per nucleus is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
2 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
3 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
4 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
5 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
6 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
7 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
8 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
9 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
10 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron

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