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

The most abundant isotope of neon is

Question # 2

Phenomenon of radioactivity is due to disintegration of

Question # 3

The energy acquired by a mass of 1g moving with the speed of light is

Question # 4

Neutron was disvovered by:

Question # 5

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 6

Structure of the nucleus was explained by

Question # 7

Charge on proton is

Question # 8

Examples of moderators used in a fission reactor is/are:

Question # 9

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 10

The total charge of any nucleus is given as

Question # 11

Curie is a unit of

Question # 12

The penetration power ofβ-particle is

Question # 13

The isotope/s of hydrogen is /are:

Question # 14

Rutherford performed an experiment on nuclear reactions in:

Question # 15

Proton was discovered by Rutherford in

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The rate of decay of radioactive substance
A. is constant
B. decrease exponentially with time
C. varies inversely as time
D. decreases linearly with time
2 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
3 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
4 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
5 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
6 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
7 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
8 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
9 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
10 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them

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