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

00:00
Question # 1

Neutron was discovered by

Question # 2

Radioactivity was discovered by

Question # 3

The chemical behaviour of an atom is determined by

Question # 4

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

Question # 5

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 6

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

Question # 7

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

Question # 8

In wilson cloud chamber, the air becomes saturated with:

Question # 9

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

Question # 10

Rutherford performed an experiment on nuclear reactions in:

Question # 11

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

Question # 12

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Question # 13

Beta particles are

Question # 14

The number if neutrons in the nucleus of 92U235are

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 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
2 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
3 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
4 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
5 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
6 The half life of uranium-238 is
A. 6.2 x 109years
B. 4.5 x 109days
C. 4.5 x 109years
D. 1.3 x 106years
7 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
8 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
9 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
10 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

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