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

When certain nucleus emits aβ-particles, is mass number:

Question # 2

The chemical properties of an element depends upon the number of

Question # 3

How much time, theα-particle more massive than an electron

Question # 4

Radioactivity was discovered by:

Question # 5

Electrons are

Question # 6

The chemical behaviour of an atom is determined by

Question # 7

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

Question # 8

β-particles are easily deflected by collisions than heavy

Question # 9

The half life of uranium-238 is

Question # 10

Mass of proton is of order of

Question # 11

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

Question # 12

An alpha particle has a charge of

Question # 13

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

Question # 14

Rutherford performed an experiment on nuclear reactions in:

Question # 15

In 1932 Chadwick discovered

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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 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
3 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
4 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
5 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
6 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
7 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
8 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
9 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
10 Nucleus of a hydrogen atom may contain:
A. One neutron only
B. Two protons and one neutron
C. Two protons and two neutrons
D. Aany of above

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