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

00:00
Question # 1

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

Question # 2

The time required for a radioactive material to decrease in active by one half is called

Question # 3

Structure of the nucleus was explained by

Question # 4

Binding energy per nucleus is

Question # 5

The chemical properties of all the isotopes of an elements are

Question # 6

Rutherford performed an experiment on nuclear reactions in:

Question # 7

The energy is found from Einstein's mass energy relation is called

Question # 8

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

Question # 9

Radium was discovered by:

Question # 10

The rate of decay of radioactive substance

Question # 11

Beta particles are

Question # 12

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

Question # 13

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 14

Mass of proton is

Question # 15

Proton was discovered by Rutherford in

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
2 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
3 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
4 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
5 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
6 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
7 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
8 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
9 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
10 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg

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