ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

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

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ECAT Pre General Science Physics Chapter 21 Nuclear Physics

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Question # 1

β-particles are easily deflected by collisions than heavy

Question # 2

Beta particles are

Question # 3

Heavy water is made of one oxygen atom and two atoms of:

Question # 4

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 5

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

Question # 6

Radiation detector are used to

Question # 7

The energy acquired by a mass of 1g moving with the speed of light is

Question # 8

Gamma rays consist of steam of

Question # 9

Which of the following material has smaller has life

Question # 10

Neutron was suggested to be in the nucleus by:

Question # 11

The isotope/s of hydrogen is /are:

Question # 12

Marie curie and Pierre curie discovered:

Question # 13

1 amu is equal to

Question # 14

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 15

Neutron was discovered by

Question # 16

Three quarks make:

Question # 17

For Protium, the mass defect is:

Question # 18

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

Question # 19

The chemical properties of all the isotopes of an elements are

Question # 20

Fraction of the decaying atoms per unit time is called

Question # 21

The total charge of any nucleus is given as

Question # 22

Nucleus consists of

Question # 23

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

Question # 24

The range of particle depends upon the factor

Question # 25

The nucleus/nuclei of hydrogen is/are:

Question # 26

The rate of decay of a radioactive substance

Question # 27

Radioactivity

Question # 28

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

Question # 29

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

Question # 30

An alpha particle has a charge of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is
A. A - Z
B. A
C. Z
D. A + Z
2 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
3 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
4 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
5 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
6 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
7 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
8 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
9 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
10 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.

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