ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

Gamma rays consist of steam of

Question # 2

An alpha particle has a charge of

Question # 3

The total charge of any nucleus is given as

Question # 4

The range of particle depends upon the factor

Question # 5

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

Question # 6

A curie represents a very strong source of

Question # 7

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

Question # 8

1 amu is equal to

Question # 9

Charge on neutron is

Question # 10

γ-rays are

Question # 11

The half lie of radium-226 is

Question # 12

Three quarks make:

Question # 13

When certain nucleus emits anα particle, its mass number:

Question # 14

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

Question # 15

Nucleon means:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
2 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
3 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
4 For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is
A. A - Z
B. A
C. Z
D. A + Z
5 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
6 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
7 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
8 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
9 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
10 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay

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