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

Rate of decay is actually described by.

Question # 2

The emission of radiations take place in elements, having charge number greater than

Question # 3

The nucleus/nuclei of hydrogen is/are:

Question # 4

The half life of radioactive substances depends upon

Question # 5

Neutrons are

Question # 6

The most abundant isotope of neon is

Question # 7

Alfa particles are

Question # 8

Radioactivity is

Question # 9

There is present in paraffin a large amount of:

Question # 10

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Question # 11

Radioactivity was discovered by:

Question # 12

The reciprocal of decay constant λ of a radioactive material is:

Question # 13

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

Question # 14

Structure of the nucleus was explained by

Question # 15

The chemical behaviour of an atom is determined by

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
2 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
3 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
4 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
5 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
6 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
7 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
8 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
9 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
10 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg

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