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

Rate of decay is actually described by.

Question # 2

In 1932 Chadwick discovered

Question # 3

The chemical behaviour of an atom is determined by

Question # 4

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 5

The unit of decay constant is:

Question # 6

Structure of the nucleus was explained by

Question # 7

Nucleus of a hydrogen atom may contain:

Question # 8

Charge on proton is

Question # 9

The range of particle depends upon the factor

Question # 10

The number of isotopes of hydrogen are

Question # 11

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 12

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 13

Which are not the elementary particles?

Question # 14

A mass spectrograph sort out

Question # 15

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

Question # 16

The unit of decay constant is

Question # 17

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

Question # 18

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

Question # 19

Radioactivity is

Question # 20

Mass of neutron is

Question # 21

When a nucleus emits an alpha particles, its charge number decreases by

Question # 22

Neutron was suggested to be in the nucleus by:

Question # 23

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

Question # 24

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

Question # 25

Radioactivity was discovered by:

Question # 26

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

Question # 27

Rutherford performed an experiment on nuclear reactions in:

Question # 28

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 29

Radioactivity

Question # 30

The half life of uranium-238 is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
2 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
3 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
4 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
5 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
6 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
7 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
8 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
9 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
10 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

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