important MCQs Of Nuclear Chemistry – Multiple Choice Questions

Last modified on May 27th, 2019

important MCQs Of Nuclear Chemistry – Multiple Choice Questions

1. Which scientist discovered Radio-activity.

A. J.J. Thomson
B. Madame Curie
C. Henry Becquerel
D. Rutherford

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C

2. Have same atomic numbers but different atomic masses

A. Isotope
B. Atom
C. Radioisotope
D. None of these

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A

3. When a radioactive substance is subjected to a vacuum, the rate of disintegration per second

A. Increases only if the products are gaseous
B. Increase considerably
C. Decreases
D. Is not affected

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D

4. Radioactive has an unstable nucleus and undergoes radioactive decay.

A. Isotope
B. Atom
C. Radioisotope
D. None of these

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C

5. Which one of the following are Gamma rays.

A. Low energy waves
B. High energy protons
C. High energy electron
D. High energy electromagnetic waves

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D

6. Which one of the following has no charge?

A. Gamma rays
B. Beta rays
C. Alpha rays
D. Cathode rays

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A

7. Which of the following is the smallest particle of an element that retains the properties of that element?

A. Isotope
B. Atom
C. Radioisotope
D. None of these

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B

8. Hydrogen bomb is based on the phenomenon of

A. Nuclear explosion
B. Chemical reaction
C. Nuclear fusion
D. Nuclear fission

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C

9. which of the following Uranium gives stable isotope of

A. Radon
B. Krypton
C. Polonium
D. Radium

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C

10. Penetrating power of proton is

A. Greater than electron
B. Lesser than electron
C. Greater than neutron
D. None

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A

11. The average life period of a radioactive element is

A. 1.44 T
B. 144 T
C. 0.144 T
D. 14.4 T

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A

12. A certain nucleide has a half life period of 30 minutes. If a sample containing 600 atoms is allowed to decay for 90 minutes, how many atoms will remains.

A. 175 atoms
B. 250 atoms
C. 450 atoms
D. 75 atoms

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D

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