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

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

Question # 2

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

Question # 3

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

Question # 4

When certain nucleus emits anα particle, its mass number:

Question # 5

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

Question # 6

Phenomenon of radioactivity is due to disintegration of

Question # 7

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

Question # 8

A pair of quark and antiquark makes a:

Question # 9

The number of protons inside a nucleus is called

Question # 10

Neutron was discovered by

Question # 11

The range of particle depends upon the factor

Question # 12

The diameter of an atom is of the order

Question # 13

Which of the following material has smaller has life

Question # 14

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

Question # 15

The emission of radiations take place in elements, having charge number greater than

Question # 16

Proton was discovered by Rutherford in

Question # 17

After alpha decay the atomic number of the atom

Question # 18

When certain nucleus emits aβ-particles, is mass number:

Question # 19

The penetration power ofβ-particle is

Question # 20

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

Question # 21

How many isotopes of helium are present?

Question # 22

Mass of neutron is

Question # 23

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

Question # 24

1 amu is equal to

Question # 25

Radium was discovered by:

Question # 26

The chemical behaviour of an atom is determined by

Question # 27

Gamma rays consist of steam of

Question # 28

The chemical properties of all the isotopes of an elements are

Question # 29

Which are not the elementary particles?

Question # 30

Mass of proton is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
2 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
3 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
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 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
6 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
7 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
8 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
9 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
10 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A

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