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

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 2

Mass of proton is of order of

Question # 3

A pair of quark and antiquark makes a:

Question # 4

The chemical behaviour of an atom is determined by

Question # 5

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 6

Neutron was disvovered by:

Question # 7

γ-rays behave like a particle because they explain the

Question # 8

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

Question # 9

Alfa particles are

Question # 10

After alpha decay the atomic number of the atom

Question # 11

Radiation detector are used to

Question # 12

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 13

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 14

The nucleus/nuclei of hydrogen is/are:

Question # 15

For Protium, the mass defect is:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
2 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
3 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
4 The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
5 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
6 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
7 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
8 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
9 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
10 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.

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