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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 half life of radioactive substances depends upon
Question # 2
The rate of decay of a radioactive substance
Question # 3
In his experiment on nuclear reactions, Rutherford bombardedα particles on:
Question # 4
A particle having the mass of electron and charge of a proton is called a
Question # 5
For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
Question # 6
After alpha decay the atomic number of the atom
Question # 7
β-particles are easily deflected by collisions than heavy
Question # 8
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
Question # 9
The number if neutrons in the nucleus of 92U235are
Question # 10
When thorium nucleus emits aβ-particle, the daughter nucleus is called:
Question # 11
In radio-active decay, the original element which disintegrate to another element is called
Question # 12
The chemical properties of an element depends upon the number of
Question # 13
How many isotopes of helium are present?
Question # 14
The range of particle depends upon the factor
Question # 15
Nucleus of a hydrogen atom may contain:
Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 21 Nuclear Physics MCQs Online With Answers
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R Rahimsiddiqui Siddiqui 04 - Jul - 2024 00 Min 06 Sec 60/60 -
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A Abdullah Kaleem 25 - Mar - 2024 04 Min 17 Sec 40/60
ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The chemical properties of all the isotopes of an elements are |
A. same
B. different
C. slightly different
D. none of these
|
| 2 | For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is |
A. A - Z
B. A
C. Z
D. A + Z
|
| 3 | Neutrons are |
A. positive charge
B. negatively charged
C. massless
D. neutral
|
| 4 | When thorium nucleus emits aβ-particle, the daughter nucleus is called: |
A. Protactinium
B. Actinium
C. Uranium
D. Radium
|
| 5 | 1 amu is equal to |
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
|
| 6 | Radioactivity was discovered by: |
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
|
| 7 | When certain nucleus emits aβ-particles, is mass number: |
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
|
| 8 | Different radioactive material have |
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
|
| 9 | 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
|
| 10 | Alfa particles are |
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs