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

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 2

Pair production take place when energy ofγ-rays photon is

Question # 3

The energy is found from Einstein's mass energy relation is called

Question # 4

According to Rutherford atomic model, the positive charge in an atom

Question # 5

Rutherford performed an experiment on nuclear reactions in:

Question # 6

When certain nucleus emits anα particle, its mass number:

Question # 7

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

Question # 8

The most abundant isotope of neon is

Question # 9

The unit of decay constant is:

Question # 10

Radioactivity was discovered by

Question # 11

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

Question # 12

Structure of the nucleus was explained by

Question # 13

A pair of quark and antiquark makes a:

Question # 14

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

Question # 15

Neutron was discovered in

Question # 16

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 17

In wilson cloud chamber, the air becomes saturated with:

Question # 18

Electrons are

Question # 19

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 # 20

Neutron was disvovered by:

Question # 21

The half life of uranium-238 is

Question # 22

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

Question # 23

U-238 present in the natural uranium is about:

Question # 24

Mass of neutron is

Question # 25

Radioactivity

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

The rate of decay of radioactive substance

Question # 30

Radiation detector are used to

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
2 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
3 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
4 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
5 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
6 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
7 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
8 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
9 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
10 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium

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