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 unit of decay constant is:

Question # 2

The number of protons inside a nucleus is called

Question # 3

When a nucleus emits an alpha particles, its charge number decreases by

Question # 4

The amount of energy equivalent to 1 a.m.u is

Question # 5

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 6

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

Question # 7

Structure of the nucleus was explained by

Question # 8

The rate of decay of radioactive substance

Question # 9

The most abundant isotope of neon is

Question # 10

The chemical properties of an element depends upon the number of

Question # 11

The half life of uranium-238 is

Question # 12

How many isotopes of helium are present?

Question # 13

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

Question # 14

When certain nucleus emits aβ-particles, is mass number:

Question # 15

The unit of decay constant is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
2 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
3 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
4 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
5 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
6 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
7 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
8 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
9 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
10 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks

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