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

00:00
Question # 1

A mass spectrograph sort out

Question # 2

Alfa particles are

Question # 3

Examples of moderators used in a fission reactor is/are:

Question # 4

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

Question # 5

Different radioactive material have

Question # 6

The half life of radioactive substances depends upon

Question # 7

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

Question # 8

Structure of the nucleus was explained by

Question # 9

How many isotopes of helium are present?

Question # 10

Nucleus of a hydrogen atom may contain:

Question # 11

β-particles are easily deflected by collisions than heavy

Question # 12

In 1932 Chadwick discovered

Question # 13

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

Question # 14

When certain nucleus emits anα particle, its mass number:

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
2 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
3 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction
4 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
5 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
6 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
7 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
8 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
9 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
10 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity

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  • alishba rasheed

    alishba rasheed

    03 Mar 2018

    easy mcqs

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