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

Structure of the nucleus was explained by

Question # 2

Different radioactive material have

Question # 3

Phenomenon of radioactivity is due to disintegration of

Question # 4

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

Question # 5

Which of the following material has smaller has life

Question # 6

Proton was discovered by Rutherford in

Question # 7

The half life of uranium-238 is

Question # 8

Beta particles are

Question # 9

The diameter of an atom is of the order

Question # 10

Nucleon means:

Question # 11

Radiation detector are used to

Question # 12

A curie represents a very strong source of

Question # 13

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Question # 14

In 1932 Chadwick discovered

Question # 15

The rate of decay of a radioactive substance

Question # 16

Neutrons are

Question # 17

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 18

Fraction of the decaying atoms per unit time is called

Question # 19

How many isotopes of helium are present?

Question # 20

For Protium, the mass defect is:

Question # 21

The chemical behaviour of an atom is determined by

Question # 22

Charge on neutron is

Question # 23

In radio-active decay, the original element which disintegrate to another element is called

Question # 24

Radioactivity is

Question # 25

An alpha particle has a charge of

Question # 26

Radium was discovered by:

Question # 27

The chemical properties of an element depends upon the number of

Question # 28

A pair of quark and antiquark makes a:

Question # 29

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

Question # 30

After alpha decay the atomic number of the atom

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
2 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
3 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
4 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
5 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these
6 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
7 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
8 For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
A. A - Z
B. A + Z
C. Z
D. A
9 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
10 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass

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