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

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Question # 1

Curie is a unit of

Question # 2

1 amu is equal to.

Question # 3

Neutron was suggested to be in the nucleus by:

Question # 4

The penetration power ofβ-particle is

Question # 5

1 amu is equal to

Question # 6

The reciprocal of decay constant λ of a radioactive material is:

Question # 7

The number of isotopes of hydrogen are

Question # 8

A curie represents a very strong source of

Question # 9

In wilson cloud chamber, the air becomes saturated with:

Question # 10

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

Question # 11

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

Question # 12

The energy is found from Einstein's mass energy relation is called

Question # 13

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

Question # 14

The chemical properties of an element depends upon the number of

Question # 15

The unit of decay constant is:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
2 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
3 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
4 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
5 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
6 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
7 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
8 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
9 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
10 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

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