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

A pair of quark and antiquark makes a:

Question # 2

Neutron was suggested to be in the nucleus by:

Question # 3

The isotope/s of hydrogen is /are:

Question # 4

The nucleus left after the emission of some radiation is called:

Question # 5

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 6

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

Question # 7

The chemical behaviour of an atom is determined by

Question # 8

A curie represents a very strong source of

Question # 9

The penetration power ofβ-particle is

Question # 10

The most abundant isotope of neon is

Question # 11

The half life of uranium-238 is

Question # 12

Alfa particles are

Question # 13

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

Question # 14

How many isotopes of helium are present?

Question # 15

Nucleus consists of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
2 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
3 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
4 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
5 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
6 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
7 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
8 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
9 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
10 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000

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