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

For Protium, the mass defect is:

Question # 2

The diameter of an atom is of the order

Question # 3

Mass of proton is

Question # 4

How much time, theα-particle more massive than an electron

Question # 5

The figure 1.007276μ shows the mass of an:

Question # 6

The energy acquired by a mass of 1g moving with the speed of light is

Question # 7

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 8

Radioactivity

Question # 9

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

Question # 10

The emission of radiations take place in elements, having charge number greater than

Question # 11

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

Question # 12

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

Question # 13

Heavy water is made of one oxygen atom and two atoms of:

Question # 14

Proton was discovered by Rutherford in

Question # 15

Neutron was discovered by

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
2 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
3 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction
4 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
5 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
6 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
7 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
8 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
9 When thorium nucleus emits aβ-particle, the daughter nucleus is called:
A. Protactinium
B. Actinium
C. Uranium
D. Radium
10 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars

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