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

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

Question # 2

The half lie of radium-226 is

Question # 3

The total charge of any nucleus is given as

Question # 4

Which of the following material has longer half life

Question # 5

Different radioactive material have

Question # 6

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

Question # 7

For Protium, the mass defect is:

Question # 8

The unit of decay constant is:

Question # 9

Charge on proton is

Question # 10

Structure of the nucleus was explained by

Question # 11

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 12

Three quarks make:

Question # 13

An alpha particle has a charge of

Question # 14

A mass spectrograph sort out

Question # 15

U-238 present in the natural uranium is about:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
2 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
3 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
4 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
5 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
6 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
7 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
8 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
9 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
10 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity

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