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 distance travelled byα-particle in a medium before coming to rest, is called

Question # 2

When certain nucleus emits anα particle, its mass number:

Question # 3

γ-rays behave like a particle because they explain the

Question # 4

Rutherford performed an experiment on nuclear reactions in:

Question # 5

Beta particles are

Question # 6

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

Question # 7

Radioactivity

Question # 8

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

Question # 9

Neutron was disvovered by:

Question # 10

A pair of quark and antiquark makes a:

Question # 11

A curie represents a very strong source of

Question # 12

The chemical properties of an element depends upon the number of

Question # 13

Marie curie and Pierre curie discovered:

Question # 14

In 1932 Chadwick discovered

Question # 15

Charge on neutron is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
2 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
3 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
4 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
5 The half life of uranium-238 is
A. 6.2 x 109years
B. 4.5 x 109days
C. 4.5 x 109years
D. 1.3 x 106years
6 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
7 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
8 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
9 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
10 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.

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