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

In wilson cloud chamber, the air becomes saturated with:

Question # 2

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 3

Proton was discovered by Rutherford in

Question # 4

The total charge of any nucleus is given as

Question # 5

U-238 present in the natural uranium is about:

Question # 6

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

Question # 7

Curie is a unit of

Question # 8

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

Question # 9

The half life of uranium-238 is

Question # 10

Phenomenon of radioactivity is due to disintegration of

Question # 11

Electrons are

Question # 12

The range of particle depends upon the factor

Question # 13

The half life of radioactive substances depends upon

Question # 14

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

Question # 15

1 amu is equal to

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
2 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
3 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
4 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
5 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
6 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
7 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
8 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
9 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
10 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction

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