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

00:00
Question # 1

Mass of proton is of order of

Question # 2

Rate of decay is actually described by.

Question # 3

The total charge of any nucleus is given as

Question # 4

The most abundant isotope of neon is

Question # 5

Mass of proton is

Question # 6

Nucleon means:

Question # 7

Rutherford performed an experiment on nuclear reactions in:

Question # 8

The number of protons inside a nucleus is called

Question # 9

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 10

Nucleus consists of

Question # 11

Fraction of the decaying atoms per unit time is called

Question # 12

Gamma rays consist of steam of

Question # 13

U-238 present in the natural uranium is about:

Question # 14

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 15

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
2 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
3 When radioactive nucleus emits aβ-particle, the proton-neutron ratio
A. decrease
B. increase
C. same
D. none of these
4 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
5 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
6 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
7 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
8 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
9 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
10 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron

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