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

Nucleus of a hydrogen atom may contain:

Question # 2

The most abundant isotope of neon is

Question # 3

Neon gas have three isotopes whose atomic numbers are

Question # 4

U-238 present in the natural uranium is about:

Question # 5

Neutron was suggested to be in the nucleus by:

Question # 6

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

Question # 7

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

Question # 8

Marie curie and Pierre curie discovered:

Question # 9

The reciprocal of decay constant λ of a radioactive material is:

Question # 10

1 amu is equal to.

Question # 11

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

Question # 12

Which of the following material has longer half life

Question # 13

Radioactivity was discovered by:

Question # 14

Curie is a unit of

Question # 15

Radioactivity was discovered by

Question # 16

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 17

The half life of radioactive substances depends upon

Question # 18

A particle having the mass of electron and charge of a proton is called a

Question # 19

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

Question # 20

An alpha particle has a charge of

Question # 21

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

Question # 22

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

Question # 23

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 24

A pair of quark and antiquark makes a:

Question # 25

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

Question # 26

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

Question # 27

The number of isotopes of hydrogen are

Question # 28

The unit of decay constant is

Question # 29

γ-rays behave like a particle because they explain the

Question # 30

The penetration power ofβ-particle is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction
2 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
3 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
4 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
5 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
6 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
7 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
8 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
9 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
10 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920

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