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

The counter, which also provides the power to the G.M. tube is called:

Question # 2

The number of protons inside a nucleus is called

Question # 3

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

Question # 4

The diameter of an atom is of the order

Question # 5

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

Question # 6

Mass of proton is

Question # 7

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

Question # 8

Charge on neutron is

Question # 9

Neon gas have three isotopes whose atomic numbers are

Question # 10

Which of the following material has smaller has life

Question # 11

Marie curie and Pierre curie discovered:

Question # 12

Mass of proton is of order of

Question # 13

When certain nucleus emits anα particle, its mass number:

Question # 14

The half lie of radium-226 is

Question # 15

Nucleon means:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
2 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
3 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
4 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
5 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
6 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
7 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
8 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
9 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
10 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932

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