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

A particle having the mass of electron and charge of a proton is called a

Question # 2

Which of the following material has smaller has life

Question # 3

Mass of proton is

Question # 4

There is present in paraffin a large amount of:

Question # 5

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

Question # 6

An alpha particle has a charge of

Question # 7

U-238 present in the natural uranium is about:

Question # 8

The chemical properties of an element depends upon the number of

Question # 9

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

Question # 10

Radioactivity is

Question # 11

Which of these is not a radiation detector

Question # 12

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 13

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

Question # 14

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

Question # 15

Neon gas have three isotopes whose atomic numbers are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
2 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
3 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
4 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
5 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
6 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
7 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
8 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
9 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
10 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3

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