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

1 amu is equal to

Question # 2

Neon gas have three isotopes whose atomic numbers are

Question # 3

The chemical properties of an element depends upon the number of

Question # 4

Alfa particles are

Question # 5

Neutron was discovered by

Question # 6

Which of the following material has smaller has life

Question # 7

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

Question # 8

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

Question # 9

In wilson cloud chamber, the air becomes saturated with:

Question # 10

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

Question # 11

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

Question # 12

Which of the following material has longer half life

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
2 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
3 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
4 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
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 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
7 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
8 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
9 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
10 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule

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