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

Which of the following material has smaller has life

Question # 2

Radioactivity

Question # 3

A mass spectrograph sort out

Question # 4

When certain nucleus emits anα particle, its mass number:

Question # 5

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

Question # 6

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

Question # 7

A curie represents a very strong source of

Question # 8

There is present in paraffin a large amount of:

Question # 9

Rutherford performed an experiment on nuclear reactions in:

Question # 10

β-particles are easily deflected by collisions than heavy

Question # 11

Nucleus of a hydrogen atom may contain:

Question # 12

A pair of quark and antiquark makes a:

Question # 13

Neon gas have three isotopes whose atomic numbers are

Question # 14

U-238 present in the natural uranium is about:

Question # 15

Curie is a unit of

Question # 16

γ-rays are

Question # 17

Which of these is not a radiation detector

Question # 18

The most abundant isotope of neon is

Question # 19

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

Question # 20

Electrons are

Question # 21

The number if neutrons in the nucleus of 92U235are

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

Neutron was discovered in

Question # 24

The half life of radioactive substances depends upon

Question # 25

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

Question # 26

The half life of uranium-238 is

Question # 27

Three quarks make:

Question # 28

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 # 29

Alfa particles are

Question # 30

The half lie of radium-226 is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
2 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
3 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
4 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
5 When thorium nucleus emits aβ-particle, the daughter nucleus is called:
A. Protactinium
B. Actinium
C. Uranium
D. Radium
6 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
7 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
8 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
9 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
10 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

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