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

Which of the following material has longer half life

Question # 2

The range of particle depends upon the factor

Question # 3

β-particles are easily deflected by collisions than heavy

Question # 4

The chemical properties of an element depends upon the number of

Question # 5

Beta particles are

Question # 6

Marie curie and Pierre curie discovered:

Question # 7

1 amu is equal to.

Question # 8

How much time, theα-particle more massive than an electron

Question # 9

There is present in paraffin a large amount of:

Question # 10

Charge on proton is

Question # 11

U-238 present in the natural uranium is about:

Question # 12

The isotope/s of hydrogen is /are:

Question # 13

The chemical behaviour of an atom is determined by

Question # 14

A pair of quark and antiquark makes a:

Question # 15

After alpha decay the atomic number of the atom

Question # 16

Alfa particles are

Question # 17

The penetration power ofβ-particle is

Question # 18

Fraction of the decaying atoms per unit time is called

Question # 19

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

Question # 20

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 21

When certain nucleus emits anα particle, its mass number:

Question # 22

Nucleon means:

Question # 23

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

Question # 24

Phenomenon of radioactivity is due to disintegration of

Question # 25

The total charge of any nucleus is given as

Question # 26

The range ofβ-particle in air is greater than that ofα-particle by

Question # 27

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

Question # 28

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 # 29

Which of the following material has smaller has life

Question # 30

Three quarks make:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1
2 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
3 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
4 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
5 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
6 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
7 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
8 When thorium nucleus emits aβ-particle, the daughter nucleus is called:
A. Protactinium
B. Actinium
C. Uranium
D. Radium
9 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
10 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

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