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

Mass of proton is of order of

Question # 2

Which of the following material has smaller has life

Question # 3

Neutron was disvovered by:

Question # 4

β-particles are easily deflected by collisions than heavy

Question # 5

Charge on proton is

Question # 6

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

Question # 7

Heavy water is made of one oxygen atom and two atoms of:

Question # 8

The nucleus/nuclei of hydrogen is/are:

Question # 9

Which of the following material has longer half life

Question # 10

The half life of radioactive substances depends upon

Question # 11

Radioactivity is

Question # 12

Neon gas have three isotopes whose atomic numbers are

Question # 13

Beta particles are

Question # 14

Rutherford performed an experiment on nuclear reactions in:

Question # 15

A mass spectrograph sort out

Question # 16

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

Question # 17

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 # 18

In wilson cloud chamber, the air becomes saturated with:

Question # 19

For Protium, the mass defect is:

Question # 20

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

Question # 21

Charge on neutron is

Question # 22

In 1932 Chadwick discovered

Question # 23

Proton was discovered by Rutherford in

Question # 24

The isotope/s of hydrogen is /are:

Question # 25

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 26

How many isotopes of helium are present?

Question # 27

A curie represents a very strong source of

Question # 28

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

Question # 29

Which are not the elementary particles?

Question # 30

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

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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 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
3 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
4 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
5 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
6 When thorium nucleus emits aβ-particle, the daughter nucleus is called:
A. Protactinium
B. Actinium
C. Uranium
D. Radium
7 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
8 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
9 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
10 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52

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