ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Question # 1

The range of particle depends upon the factor

Question # 2

The chemical properties of an element depends upon the number of

Question # 3

The number of protons inside a nucleus is called

Question # 4

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 5

β-particles are easily deflected by collisions than heavy

Question # 6

The penetration power ofβ-particle is

Question # 7

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 8

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 9

Curie is a unit of

Question # 10

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 11

The nucleus/nuclei of hydrogen is/are:

Question # 12

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

Question # 13

According to Rutherford atomic model, the positive charge in an atom

Question # 14

The range ofβ-particle in air is greater than that ofα-particle by

Question # 15

Pair production take place when energy ofγ-rays photon is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
2 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
3 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
4 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
5 The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
6 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
7 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
8 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
9 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
10 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J

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