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

In 1932 Chadwick discovered

Question # 2

A curie represents a very strong source of

Question # 3

Proton was discovered by Rutherford in

Question # 4

1 amu is equal to.

Question # 5

Mass of proton is of order of

Question # 6

The number of isotopes of hydrogen are

Question # 7

γ-rays are

Question # 8

The nucleus/nuclei of hydrogen is/are:

Question # 9

γ-rays behave like a particle because they explain the

Question # 10

A particle having the mass of electron and charge of a proton is called a

Question # 11

Structure of the nucleus was explained by

Question # 12

The chemical properties of an element depends upon the number of

Question # 13

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

Question # 14

Neon gas have three isotopes whose atomic numbers are

Question # 15

The nuclei of an element having the same charge number but different mass numbers are called:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
2 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
3 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
4 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
5 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
6 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
7 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
8 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
9 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
10 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them

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