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 diameter of an atom is of the order

Question # 2

Rutherford performed an experiment on nuclear reactions in:

Question # 3

The half lie of radium-226 is

Question # 4

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 5

Which of the following material has smaller has life

Question # 6

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 7

Neutron was disvovered by:

Question # 8

Examples of moderators used in a fission reactor is/are:

Question # 9

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

Question # 10

The total charge of any nucleus is given as

Question # 11

A particle having the mass of electron and charge of a proton is called a

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

For Protium, the mass defect is:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
3 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
4 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
5 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
6 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
7 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
8 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
9 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
10 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass

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