ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

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

Question # 2

The number if neutrons in the nucleus of 92U235are

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Mass of proton is of order of

Question # 7

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

Question # 8

The counter, which also provides the power to the G.M. tube is called:

Question # 9

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

Question # 10

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

Question # 11

For Protium, the mass defect is:

Question # 12

Neutron was discovered in

Question # 13

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

Question # 14

Charge on neutron is

Question # 15

Gamma rays consist of steam of

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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 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
3 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
4 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
5 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
6 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
7 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
8 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
9 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
10 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule

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