ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Question # 1

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

Question # 2

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

Question # 3

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 # 4

Radium was discovered by:

Question # 5

Neutron was suggested to be in the nucleus by:

Question # 6

The number of protons inside a nucleus is called

Question # 7

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

Question # 8

Mass of proton is of order of

Question # 9

The energy is found from Einstein's mass energy relation is called

Question # 10

Radioactivity

Question # 11

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

Question # 12

γ-rays behave like a particle because they explain the

Question # 13

Alfa particles are

Question # 14

Radioactivity was discovered by

Question # 15

The isotope/s of hydrogen is /are:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
2 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
3 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
4 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
5 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
6 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
7 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
8 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
9 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
10 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg

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