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

The rate of decay of radioactive substance

Question # 2

Nucleus consists of

Question # 3

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

Question # 4

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 5

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

Question # 6

For Protium, the mass defect is:

Question # 7

Marie curie and Pierre curie discovered:

Question # 8

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

Question # 9

Curie is a unit of

Question # 10

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

Question # 11

How many isotopes of helium are present?

Question # 12

A mass spectrograph sort out

Question # 13

Neon gas have three isotopes whose atomic numbers are

Question # 14

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

Question # 15

The amount of energy equivalent to 1 a.m.u is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
2 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
3 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
4 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
5 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
6 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
7 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
8 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
9 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
10 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only

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