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

After alpha decay the atomic number of the atom

Question # 2

Phenomenon of radioactivity is due to disintegration of

Question # 3

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 4

1 amu is equal to

Question # 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

Question # 6

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

Question # 7

β-particles are easily deflected by collisions than heavy

Question # 8

Radioactivity is

Question # 9

Radioactivity was discovered by:

Question # 10

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

Question # 11

The rate of decay of radioactive substance

Question # 12

The chemical properties of an element depends upon the number of

Question # 13

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

Question # 14

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

Question # 15

Fraction of the decaying atoms per unit time is called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
3 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
4 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
5 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
6 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
7 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
8 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
9 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
10 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927

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