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

β-particles are easily deflected by collisions than heavy

Question # 2

For Protium, the mass defect is:

Question # 3

The diameter of an atom is of the order

Question # 4

1 amu is equal to.

Question # 5

The most abundant isotope of neon is

Question # 6

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

Question # 7

The total charge of any nucleus is given as

Question # 8

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

Question # 9

U-238 present in the natural uranium is about:

Question # 10

The number of isotopes of hydrogen are

Question # 11

Neutron was disvovered by:

Question # 12

Phenomenon of radioactivity is due to disintegration of

Question # 13

The reciprocal of decay constant λ of a radioactive material is:

Question # 14

There is present in paraffin a large amount of:

Question # 15

The rate of decay of a radioactive substance

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
2 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
3 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
4 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
5 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
6 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
7 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
8 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
9 Alfa , beta and gamma rays are emitted from a radio-active substance
A. spontaneously
B. when it is heated
C. when it is exposed to light
D. When it interacts with the other particle
10 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4

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