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

00:00
Question # 1

Charge on proton is

Question # 2

Neutron was discovered in

Question # 3

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

Question # 4

A pair of quark and antiquark makes a:

Question # 5

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

Question # 6

For Protium, the mass defect is:

Question # 7

In wilson cloud chamber, the air becomes saturated with:

Question # 8

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

Question # 9

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

Question # 10

The range of particle depends upon the factor

Question # 11

Which are not the elementary particles?

Question # 12

The unit of decay constant is

Question # 13

Radium was discovered by:

Question # 14

The chemical properties of all the isotopes of an elements are

Question # 15

U-238 present in the natural uranium is about:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
2 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
3 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
4 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
5 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
6 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
7 When radioactive nucleus emits aβ-particle, the proton-neutron ratio
A. decrease
B. increase
C. same
D. none of these
8 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
9 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
10 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200

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