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

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

Question # 2

How many isotopes of helium are present?

Question # 3

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

Question # 4

Radioactivity is

Question # 5

Marie curie and Pierre curie discovered:

Question # 6

γ-rays are

Question # 7

Which are not the elementary particles?

Question # 8

Rutherford performed an experiment on nuclear reactions in:

Question # 9

Charge on proton is

Question # 10

U-238 present in the natural uranium is about:

Question # 11

γ-rays behave like a particle because they explain the

Question # 12

Fraction of the decaying atoms per unit time is called

Question # 13

Mass of neutron is

Question # 14

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

Question # 15

The total charge of any nucleus is given as

Question # 16

A pair of quark and antiquark makes a:

Question # 17

Alfa particles are

Question # 18

In 1932 Chadwick discovered

Question # 19

Radium was discovered by:

Question # 20

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

Question # 21

Charge on neutron is

Question # 22

Which of these is not a radiation detector

Question # 23

Neutron was disvovered by:

Question # 24

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

Question # 25

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

Question # 26

A curie represents a very strong source of

Question # 27

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Question # 28

β-particles are easily deflected by collisions than heavy

Question # 29

Neon gas have three isotopes whose atomic numbers are

Question # 30

The rate of decay of a radioactive substance

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
2 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
3 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
4 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
5 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
6 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
7 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
8 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
9 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
10 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector

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