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MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
00:00
Question # 1
The time required for a radioactive material to decrease in active by one half is called
Question # 2
Neutron was discovered by
Question # 3
Curie is a unit of
Question # 4
Mass of proton is
Question # 5
The nucleus left after the emission of some radiation is called:
Question # 6
The reciprocal of decay constant λ of a radioactive material is:
Question # 7
Mass of neutron is
Question # 8
The counter, which also provides the power to the G.M. tube is called:
Question # 9
Proton was discovered by Rutherford in
Question # 10
1 amu is equal to.
Question # 11
The rate of decay of radioactive substance
Question # 12
Which of these is not a radiation detector
Question # 13
There is present in paraffin a large amount of:
Question # 14
The amount of energy equivalent to 1 a.m.u is
Question # 15
Phenomenon of radioactivity is due to disintegration of
Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 21 Nuclear Physics MCQs Online With Answers
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Heavy water is made of one oxygen atom and two atoms of: |
A. Protium
B. Deuterium
C. Tritium
D. Any of these
|
| 2 | Referring to the above figure, we can say that of all the elements, the most stable element is |
A. Phosphours
B. Iron
C. uranium
D. Lithium
|
| 3 | Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called |
A. deuteron
B. deterium
C. protium
D. tritium
|
| 4 | Radioactivity was discovered by |
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
|
| 5 | Neutrons are |
A. positive charge
B. negatively charged
C. massless
D. neutral
|
| 6 | 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
|
| 7 | The unit of decay constant is: |
A. Second
B. Metre
C. Hour
D. Year
|
| 8 | The number if neutrons in the nucleus of 92U235are |
A. Infinite
B. 92
C. 235
D. 143
|
| 9 | 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
|
| 10 | 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
|
Test Questions