ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Question # 1

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 2

The total charge of any nucleus is given as

Question # 3

Mass of proton is of order of

Question # 4

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 # 5

Mass of neutron is

Question # 6

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 7

Electrons are

Question # 8

Three quarks make:

Question # 9

When certain nucleus emits anα particle, its mass number:

Question # 10

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

Question # 11

There is present in paraffin a large amount of:

Question # 12

Which of these is not a radiation detector

Question # 13

Marie curie and Pierre curie discovered:

Question # 14

Curie is a unit of

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
2 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
3 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
4 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
5 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
6 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
7 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
8 The rate of decay of a radioactive substance
A. decrease exponentially with time
B. decreases linearly with time
C. increases linearly with time
D. increases exponentially with time
9 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
10 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes

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