ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

How many isotopes of helium are present?

Question # 2

Which of the following material has longer half life

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

1 amu is equal to.

Question # 7

A pair of quark and antiquark makes a:

Question # 8

When certain nucleus emits anα particle, its mass number:

Question # 9

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

Question # 10

Nucleus of a hydrogen atom may contain:

Question # 11

The energy is found from Einstein's mass energy relation is called

Question # 12

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

Question # 13

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

Question # 14

There is present in paraffin a large amount of:

Question # 15

Charge on proton is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
2 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
3 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
4 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
5 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
6 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
7 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
8 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
9 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
10 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford

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