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

The unit of decay constant is:

Question # 2

An alpha particle has a charge of

Question # 3

The energy acquired by a mass of 1g moving with the speed of light is

Question # 4

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

Question # 5

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

Question # 6

The total charge of any nucleus is given as

Question # 7

After alpha decay the atomic number of the atom

Question # 8

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 9

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

Question # 10

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 11

Rutherford performed an experiment on nuclear reactions in:

Question # 12

Charge on proton is

Question # 13

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

Question # 14

Neutron was suggested to be in the nucleus by:

Question # 15

The most abundant isotope of neon is

Question # 16

Radioactivity was discovered by:

Question # 17

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

Question # 18

Neutrons are

Question # 19

Neutron was discovered in

Question # 20

The reciprocal of decay constant λ of a radioactive material is:

Question # 21

Which are not the elementary particles?

Question # 22

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

Question # 23

The chemical properties of an element depends upon the number of

Question # 24

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 25

The emission of radiations take place in elements, having charge number greater than

Question # 26

Mass of neutron is

Question # 27

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

Question # 28

For Protium, the mass defect is:

Question # 29

Which of the following material has longer half life

Question # 30

Radium was discovered by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
2 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
3 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
4 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
5 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
6 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
7 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
8 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
9 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
10 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves

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