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

1 amu is equal to

Question # 2

Electrons are

Question # 3

Mass of neutron is

Question # 4

The most abundant isotope of neon is

Question # 5

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 6

A pair of quark and antiquark makes a:

Question # 7

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 8

Nucleus consists of

Question # 9

The penetration power ofβ-particle is

Question # 10

β-particles are easily deflected by collisions than heavy

Question # 11

The emission of radiations take place in elements, having charge number greater than

Question # 12

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

Question # 13

The isotope/s of hydrogen is /are:

Question # 14

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

Question # 15

The counter, which also provides the power to the G.M. tube is called:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
2 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
3 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
4 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
5 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
6 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
7 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
8 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
9 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
10 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these

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