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

The total charge of any nucleus is given as

Question # 2

Radioactivity was discovered by

Question # 3

The half life of uranium-238 is

Question # 4

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

Question # 5

The range ofβ-particle in air is greater than that ofα-particle by

Question # 6

Which of these is not a radiation detector

Question # 7

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 8

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 9

Three quarks make:

Question # 10

Binding energy per nucleus is

Question # 11

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

Question # 12

When a nucleus emits an alpha particles, its charge number decreases by

Question # 13

After alpha decay the atomic number of the atom

Question # 14

The range of particle depends upon the factor

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
2 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
3 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
4 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
5 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
6 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
7 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
8 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
9 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
10 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg

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  • alishba rasheed

    alishba rasheed

    03 Mar 2018

    easy mcqs

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