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

Radioactivity was discovered by

Question # 2

An alpha particle has a charge of

Question # 3

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

Question # 4

Radioactivity is

Question # 5

Mass of proton is of order of

Question # 6

The nucleus/nuclei of hydrogen is/are:

Question # 7

1 amu is equal to

Question # 8

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

Question # 9

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

Question # 10

β-particles are easily deflected by collisions than heavy

Question # 11

According to Rutherford atomic model, the positive charge in an atom

Question # 12

1 amu is equal to.

Question # 13

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

Question # 14

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

Question # 15

Nucleus of a hydrogen atom may contain:

Question # 16

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

Question # 17

Heavy water is made of one oxygen atom and two atoms of:

Question # 18

For Protium, the mass defect is:

Question # 19

U-238 present in the natural uranium is about:

Question # 20

Which of these is not a radiation detector

Question # 21

The penetration power ofβ-particle is

Question # 22

The unit of decay constant is:

Question # 23

Electrons are

Question # 24

Radioactivity was discovered by:

Question # 25

The time required for a radioactive material to decrease in active by one half is called

Question # 26

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

Question # 27

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

Question # 28

Mass of proton is

Question # 29

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

Question # 30

Neutron was discovered in

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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 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
3 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
4 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
5 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
6 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
7 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
8 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
9 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
10 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves

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