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 nucleus/nuclei of hydrogen is/are:

Question # 2

Rutherford performed an experiment on nuclear reactions in:

Question # 3

After alpha decay the atomic number of the atom

Question # 4

In radio-active decay, the original element which disintegrate to another element is called

Question # 5

The number if neutrons in the nucleus of 92U235are

Question # 6

The emission of radiations take place in elements, having charge number greater than

Question # 7

When certain nucleus emits anα particle, its mass number:

Question # 8

The range of particle depends upon the factor

Question # 9

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

Question # 10

Curie is a unit of

Question # 11

The chemical properties of all the isotopes of an elements are

Question # 12

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

Question # 13

How many isotopes of helium are present?

Question # 14

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 15

Binding energy per nucleus is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
2 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
3 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
4 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
5 For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
A. A - Z
B. A + Z
C. Z
D. A
6 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
7 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
8 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
9 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
10 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four

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