ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

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ECAT Pre General Science Physics Chapter 21 Nuclear Physics

00:00
Question # 1

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

Question # 2

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

Question # 3

The half life of radioactive substances depends upon

Question # 4

The half lie of radium-226 is

Question # 5

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 6

Neutrons are

Question # 7

The most abundant isotope of neon is

Question # 8

The number of all the protons and neutrons in a nucleus is known as

Question # 9

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 10

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 11

Charge on proton is

Question # 12

Nucleus consists of

Question # 13

Three quarks make:

Question # 14

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Question # 15

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 16

Radioactivity

Question # 17

Which are not the elementary particles?

Question # 18

A mass spectrograph sort out

Question # 19

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

Question # 20

Radium was discovered by:

Question # 21

Proton was discovered by Rutherford in

Question # 22

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

Question # 23

Structure of the nucleus was explained by

Question # 24

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 25

Marie curie and Pierre curie discovered:

Question # 26

Charge on neutron is

Question # 27

1 amu is equal to

Question # 28

The rate of decay of radioactive substance

Question # 29

The number if neutrons in the nucleus of 92U235are

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
2 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
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 nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
5 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
6 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
7 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
8 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
9 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
10 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only

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