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

Radium was discovered by:

Question # 2

Mass of proton is

Question # 3

Radioactivity is

Question # 4

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

Question # 5

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

Question # 6

When certain nucleus emits anα particle, its mass number:

Question # 7

Neutron was discovered in

Question # 8

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

Question # 9

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

Question # 10

The half life of radioactive substances depends upon

Question # 11

There is present in paraffin a large amount of:

Question # 12

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

Question # 13

A pair of quark and antiquark makes a:

Question # 14

For Protium, the mass defect is:

Question # 15

The number of protons inside a nucleus is called

Question # 16

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

Question # 17

The chemical properties of all the isotopes of an elements are

Question # 18

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

Question # 19

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

Question # 20

The half lie of radium-226 is

Question # 21

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

Question # 22

γ-rays behave like a particle because they explain the

Question # 23

Binding energy per nucleus is

Question # 24

The number if neutrons in the nucleus of 92U235are

Question # 25

The figure 1.007276μ shows the mass of an:

Question # 26

An alpha particle has a charge of

Question # 27

Mass of proton is of order of

Question # 28

Which are not the elementary particles?

Question # 29

Radioactivity was discovered by

Question # 30

The chemical behaviour of an atom is determined by

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
2 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
3 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
4 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
5 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
6 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
7 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
8 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
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 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron

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