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

The range ofβ-particle in air is greater than that ofα-particle by

Question # 2

Curie is a unit of

Question # 3

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

Question # 4

The number of protons inside a nucleus is called

Question # 5

The most abundant isotope of neon is

Question # 6

The nucleus/nuclei of hydrogen is/are:

Question # 7

1 amu is equal to.

Question # 8

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

Question # 9

The number of all the protons and neutrons in a nucleus is known as

Question # 10

The total charge of any nucleus is given as

Question # 11

How much time, theα-particle more massive than an electron

Question # 12

In wilson cloud chamber, the air becomes saturated with:

Question # 13

Binding energy per nucleus is

Question # 14

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

Question # 15

Neutrons are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The half life of uranium-238 is
A. 6.2 x 109years
B. 4.5 x 109days
C. 4.5 x 109years
D. 1.3 x 106years
2 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
3 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
4 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
5 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
6 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
7 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
8 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
9 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
10 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times

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