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

Question # 2

Which of the following material has longer half life

Question # 3

Charge on neutron is

Question # 4

Radioactivity

Question # 5

Which of these is not a radiation detector

Question # 6

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

Question # 7

After alpha decay the atomic number of the atom

Question # 8

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

Question # 9

Nucleon means:

Question # 10

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

Question # 11

The rate of decay of a radioactive substance

Question # 12

Three quarks make:

Question # 13

A curie represents a very strong source of

Question # 14

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

Question # 15

There is present in paraffin a large amount of:

Question # 16

Rutherford performed an experiment on nuclear reactions in:

Question # 17

Which of the following material has smaller has life

Question # 18

The nucleus left after the emission of some radiation is called:

Question # 19

The chemical properties of an element depends upon the number of

Question # 20

γ-rays are

Question # 21

Charge on proton is

Question # 22

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 # 23

The unit of decay constant is

Question # 24

In wilson cloud chamber, the air becomes saturated with:

Question # 25

U-238 present in the natural uranium is about:

Question # 26

The half life of uranium-238 is

Question # 27

The chemical behaviour of an atom is determined by

Question # 28

Curie is a unit of

Question # 29

In radio-active decay, the original element which disintegrate to another element is called

Question # 30

β-particles are easily deflected by collisions than heavy

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
2 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
3 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
4 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these
5 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
6 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
7 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
8 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
9 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
10 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity

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