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

Nucleus consists of

Question # 2

The unit of decay constant is

Question # 3

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

Question # 4

The most abundant isotope of neon is

Question # 5

Neutron was discovered by

Question # 6

Phenomenon of radioactivity is due to disintegration of

Question # 7

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 8

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

Question # 9

Nucleus of a hydrogen atom may contain:

Question # 10

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

Question # 11

Binding energy per nucleus is

Question # 12

Which of the following material has smaller has life

Question # 13

β-particles are easily deflected by collisions than heavy

Question # 14

In radio-active decay, the original element which disintegrate to another element is called

Question # 15

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
2 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
3 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
4 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
5 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
6 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
7 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
8 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
9 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
10 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life

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