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

The chemical behaviour of an atom is determined by

Question # 2

Mass of neutron is

Question # 3

Fraction of the decaying atoms per unit time is called

Question # 4

The nucleus left after the emission of some radiation is called:

Question # 5

Radioactivity was discovered by:

Question # 6

The chemical properties of an element depends upon the number of

Question # 7

The number if neutrons in the nucleus of 92U235are

Question # 8

Which of the following material has smaller has life

Question # 9

Radioactivity was discovered by

Question # 10

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 11

For Protium, the mass defect is:

Question # 12

Neutron was discovered by

Question # 13

Nucleus consists of

Question # 14

The range of particle depends upon the factor

Question # 15

The half life of uranium-238 is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
2 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
3 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
4 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
5 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
6 When radioactive nucleus emits aβ-particle, the proton-neutron ratio
A. decrease
B. increase
C. same
D. none of these
7 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
8 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
9 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
10 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance

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