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

Beta particles are

Question # 2

The range ofβ-particle in air is greater than that ofα-particle by

Question # 3

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

Question # 4

Binding energy per nucleus is

Question # 5

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

Question # 6

Nucleus of a hydrogen atom may contain:

Question # 7

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

Question # 8

Structure of the nucleus was explained by

Question # 9

How much time, theα-particle more massive than an electron

Question # 10

The penetration power ofβ-particle is

Question # 11

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

Question # 12

Charge on neutron is

Question # 13

Different radioactive material have

Question # 14

Rate of decay is actually described by.

Question # 15

Neutron was suggested to be in the nucleus by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
2 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
3 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
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 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
6 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
7 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
8 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
9 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
10 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

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