ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

In wilson cloud chamber, the air becomes saturated with:

Question # 7

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

Question # 8

The isotope/s of hydrogen is /are:

Question # 9

The unit of decay constant is

Question # 10

Radioactivity was discovered by:

Question # 11

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

Question # 12

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

Question # 13

The counter, which also provides the power to the G.M. tube is called:

Question # 14

Proton was discovered by Rutherford in

Question # 15

Electrons are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
2 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
3 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
4 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
5 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
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
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
7 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
8 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
9 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
10 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves

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