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

00:00
Question # 1

According to Rutherford atomic model, the positive charge in an atom

Question # 2

Nuclei that have the same charge number but different mass number are called

Question # 3

For Protium, the mass defect is:

Question # 4

The chemical properties of all the isotopes of an elements are

Question # 5

Mass of neutron is

Question # 6

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

Question # 7

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Question # 8

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

Question # 9

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 10

Curie is a unit of

Question # 11

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 12

The time required for a radioactive material to decrease in active by one half is called

Question # 13

The figure 1.007276μ shows the mass of an:

Question # 14

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 15

Different radioactive material have

Question # 16

The counter, which also provides the power to the G.M. tube is called:

Question # 17

Neutron was disvovered by:

Question # 18

The rate of decay of a radioactive substance

Question # 19

Radioactivity was discovered by

Question # 20

The chemical properties of an element depends upon the number of

Question # 21

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 # 22

An alpha particle has a charge of

Question # 23

Fraction of the decaying atoms per unit time is called

Question # 24

Neutron was discovered by

Question # 25

The half lie of radium-226 is

Question # 26

In 1932 Chadwick discovered

Question # 27

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

Question # 28

Mass of proton is of order of

Question # 29

γ-rays are

Question # 30

Radioactivity

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
2 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
3 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
4 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
5 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
6 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
7 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these
8 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
9 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
10 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years

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