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

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

Question # 2

The number of protons inside a nucleus is called

Question # 3

Nuclei that have the same charge number but different mass number are called

Question # 4

The rate of decay of radioactive substance

Question # 5

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

Question # 6

A pair of quark and antiquark makes a:

Question # 7

When certain nucleus emits anα particle, its mass number:

Question # 8

1 amu is equal to

Question # 9

Nucleon means:

Question # 10

The range of particle depends upon the factor

Question # 11

The rate of decay of a radioactive substance

Question # 12

Radioactivity

Question # 13

Charge on proton is

Question # 14

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
2 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
3 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
4 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
5 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
6 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
7 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
8 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
9 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
10 For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
A. A - Z
B. A + Z
C. Z
D. A

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