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

Radiation detector are used to

Question # 2

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

Question # 3

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

Question # 4

Neutron was discovered by

Question # 5

Alfa particles are

Question # 6

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 7

After alpha decay the atomic number of the atom

Question # 8

Neon gas have three isotopes whose atomic numbers are

Question # 9

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 10

Structure of the nucleus was explained by

Question # 11

Three quarks make:

Question # 12

Mass of neutron is

Question # 13

How many isotopes of helium are present?

Question # 14

β-particles are easily deflected by collisions than heavy

Question # 15

1 amu is equal to

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
2 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
3 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
4 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
5 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
6 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
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 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
9 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
10 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford

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