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

00:00
Question # 1

Radioactivity

Question # 2

Structure of the nucleus was explained by

Question # 3

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

Question # 4

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 5

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

Question # 6

Neutrons are

Question # 7

The number of isotopes of hydrogen are

Question # 8

Examples of moderators used in a fission reactor is/are:

Question # 9

Pair production take place when energy ofγ-rays photon is

Question # 10

The unit of decay constant is

Question # 11

The range ofβ-particle in air is greater than that ofα-particle by

Question # 12

Mass of proton is of order of

Question # 13

In 1932 Chadwick discovered

Question # 14

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

Question # 15

The diameter of an atom is of the order

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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 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
3 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
4 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
5 For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is
A. A - Z
B. A
C. Z
D. A + Z
6 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
7 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
8 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
9 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
10 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

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