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

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 2

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

Question # 3

According to Rutherford atomic model, the positive charge in an atom

Question # 4

Neon gas have three isotopes whose atomic numbers are

Question # 5

Nucleon means:

Question # 6

Radiation detector are used to

Question # 7

Neutron was suggested to be in the nucleus by:

Question # 8

Three quarks make:

Question # 9

Nucleus consists of

Question # 10

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

Question # 11

The amount of energy equivalent to 1 a.m.u is

Question # 12

Fraction of the decaying atoms per unit time is called

Question # 13

The nucleus/nuclei of hydrogen is/are:

Question # 14

When certain nucleus emits anα particle, its mass number:

Question # 15

Neutron was discovered in

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
2 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
3 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
4 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
5 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
6 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
7 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
8 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
9 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
10 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford

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