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

The chemical behaviour of an atom is determined by

Question # 2

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 3

The total charge of any nucleus is given as

Question # 4

Radioactivity is

Question # 5

The number if neutrons in the nucleus of 92U235are

Question # 6

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 # 7

Charge on proton is

Question # 8

Phenomenon of radioactivity is due to disintegration of

Question # 9

The unit of decay constant is:

Question # 10

γ-rays behave like a particle because they explain the

Question # 11

U-238 present in the natural uranium is about:

Question # 12

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

Question # 13

Neutron was suggested to be in the nucleus by:

Question # 14

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 15

An alpha particle has a charge of

Question # 16

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

Question # 17

Which are not the elementary particles?

Question # 18

Nucleon means:

Question # 19

Binding energy per nucleus is

Question # 20

There is present in paraffin a large amount of:

Question # 21

Which of the following material has smaller has life

Question # 22

In 1932 Chadwick discovered

Question # 23

Radioactivity

Question # 24

The chemical properties of all the isotopes of an elements are

Question # 25

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

Question # 26

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

Question # 27

The half lie of radium-226 is

Question # 28

Neutrons are

Question # 29

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

Question # 30

Beta particles are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
2 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
3 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
4 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
5 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
6 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
7 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
8 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
9 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
10 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life

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