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

After alpha decay the atomic number of the atom

Question # 2

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

Question # 3

Rutherford performed an experiment on nuclear reactions in:

Question # 4

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

Question # 5

Nucleon means:

Question # 6

Neutron was discovered by

Question # 7

The amount of energy equivalent to 1 a.m.u is

Question # 8

γ-rays behave like a particle because they explain the

Question # 9

Beta particles are

Question # 10

The number if neutrons in the nucleus of 92U235are

Question # 11

Different radioactive material have

Question # 12

Nuclei that have the same charge number but different mass number are called

Question # 13

Neutron was suggested to be in the nucleus by:

Question # 14

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 15

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

Question # 16

Fraction of the decaying atoms per unit time is called

Question # 17

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

Question # 18

For Protium, the mass defect is:

Question # 19

In wilson cloud chamber, the air becomes saturated with:

Question # 20

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

Question # 21

Mass of neutron is

Question # 22

The penetration power ofβ-particle is

Question # 23

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

Question # 24

A mass spectrograph sort out

Question # 25

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 26

Which of the following material has longer half life

Question # 27

Nucleus consists of

Question # 28

When certain nucleus emits anα particle, its mass number:

Question # 29

Three quarks make:

Question # 30

Proton was discovered by Rutherford in

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
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 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
4 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
5 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
6 After alpha decay the atomic number of the atom
A. increase by four
B. decreases by two
C. increases by two
D. decrease by four
7 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
8 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
9 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
10 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino

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