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

Proton was discovered by Rutherford in

Question # 2

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 3

The half life of radioactive substances depends upon

Question # 4

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

Question # 5

How many isotopes of helium are present?

Question # 6

Radioactivity was discovered by

Question # 7

Neutron was disvovered by:

Question # 8

In 1932 Chadwick discovered

Question # 9

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

Question # 10

Which are not the elementary particles?

Question # 11

The figure 1.007276μ shows the mass of an:

Question # 12

An alpha particle has a charge of

Question # 13

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

Question # 14

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 15

Phenomenon of radioactivity is due to disintegration of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
2 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
3 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
4 Alfa , beta and gamma rays are emitted from a radio-active substance
A. spontaneously
B. when it is heated
C. when it is exposed to light
D. When it interacts with the other particle
5 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
6 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
7 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
8 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
9 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
10 For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is
A. A - Z
B. A
C. Z
D. A + Z

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