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

Nucleon means:

Question # 3

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 4

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 5

Nucleus consists of

Question # 6

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

Question # 7

According to Rutherford atomic model, the positive charge in an atom

Question # 8

Pair production take place when energy ofγ-rays photon is

Question # 9

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

Question # 10

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

Question # 11

How many isotopes of helium are present?

Question # 12

Binding energy per nucleus is

Question # 13

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

Question # 14

The isotope/s of hydrogen is /are:

Question # 15

Charge on neutron is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
2 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
3 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
4 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
5 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
6 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
7 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
8 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
9 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
10 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life

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