MCQOPTIONS
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MCQOPTIONS
This section includes 36 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Energy produced in nuclear reaction is given by |
| A. | Charle-s Law |
| B. | Grahm's law |
| C. | Gay-Lussac's law |
| D. | Einstein's law |
| Answer» E. | |
| 2. |
Cobalt-60 is commonly used in radiation therapy because it emits |
| A. | -rays |
| B. | beta rays |
| C. | gamma rays |
| D. | X - rays |
| Answer» D. X - rays | |
| 3. |
The particles are |
| A. | high energy electrons |
| B. | positively charged hydrogen ions |
| C. | high energy X-ray radiations |
| D. | double positively charged helium nuclei |
| Answer» E. | |
| 4. |
A radioactive substance has a half life of four months. Three-fourth of the substance would decay in |
| A. | 3 months |
| B. | 4 months |
| C. | 8 months |
| D. | 12 months |
| Answer» D. 12 months | |
| 5. |
Match the List-I and List-II and select the correct answer using the codes given below the ListsList-I (Nuclear reactor component)List-II (Substance used)1. ModeratorA.Uranium2. Control rodB.Graphite3. Fuel rodsC.Lead 4. CoolantD.LeadE.Sodium Codes |
| A. | 1-B, 2-A, 3-C, 4-E |
| B. | 1-B, 2-C, 3-A, 4-E |
| C. | 1-C, 2-B, 3-A, 4-E |
| D. | 1-C, 2-D, 3-A, 4-B |
| Answer» E. | |
| 6. |
The fuel in atomic pile is |
| A. | carbon |
| B. | sodium |
| C. | petroleum |
| D. | uranium |
| Answer» E. | |
| 7. |
Match the Column-I Radio-isotope with Column-II, medicinal use and select the correct matchingColumn-IColumn-II1. 60CoA.Leucaemia2. 131IB.Anaemia3. 59FeC.Cancerous tumours 4. 32PD.Disorders of thyroid gland Codes |
| A. | 1-C, 2-D, 3-A, 4-B |
| B. | 1-A, 2-B, 3-C, 4-D |
| C. | 1-C, 2-D, 3-B, 4-A |
| D. | 1-D, 2-C, 3-B, 4-A |
| Answer» D. 1-D, 2-C, 3-B, 4-A | |
| 8. |
Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not ? |
| A. | Microscope |
| B. | Lead plate |
| C. | Scintillation counter |
| D. | Spectrophotometer |
| Answer» D. Spectrophotometer | |
| 9. |
In atomic reactors, graphite is used as |
| A. | Iubricant |
| B. | fuel |
| C. | linear of the ractor |
| D. | moderator |
| Answer» E. | |
| 10. |
Hydrogen bomb is based on the principle ofList-I (Characteristics)List-II (Particles)F Zero mass1.PositronG Fractional charge2.NeutrindH Fractional shin3.Quark J Integral spin4.Photon CodeFGHJA.2314B.3241C.2341D.3214 |
| A. | A. |
| B. | B. |
| C. | C. |
| D. | D. |
| Answer» B. B. | |
| 11. |
Which of the following is a radioactive element ? |
| A. | Sulphur |
| B. | Polonium |
| C. | Tellurium |
| D. | Selenium |
| Answer» C. Tellurium | |
| 12. |
Natural radioactivity was discovered by |
| A. | Rutherford |
| B. | Becquerel |
| C. | Curie |
| D. | Schmidt |
| Answer» C. Curie | |
| 13. |
A radioactive substance emits |
| A. | alpha particle |
| B. | beta particle |
| C. | gamma particle |
| D. | all of the three |
| Answer» E. | |
| 14. |
A radioactive substance has a half life of four months. Three - fourth of the substance would decay in |
| A. | 3 months |
| B. | 4 months |
| C. | 8 months |
| D. | 12 months |
| Answer» D. 12 months | |
| 15. |
A device used for the measurement of radioactivity is |
| A. | Mass spectrometer |
| B. | Cyclotron |
| C. | Nuclear reactor |
| D. | G.M. counter |
| Answer» E. | |
| 16. |
In which process, a nucleus spontaneously breaks down by emitting radiation ? |
| A. | Radioactive decay |
| B. | Fusion |
| C. | Refraction |
| D. | None of these |
| Answer» B. Fusion | |
| 17. |
Emission of -particle from an atom |
| A. | increases the number of protons in the atom |
| B. | increases the number of neutrons in the atom |
| C. | decreases the number of proton in the atom |
| D. | does not change the number of neutrons and protons in an atom |
| Answer» B. increases the number of neutrons in the atom | |
| 18. |
The difference between a nuclear reactor and atomic bomb is that |
| A. | no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction |
| B. | the chain reaction in nuclear reactor is controlled |
| C. | the chain reaction in nuclear reactor is not controlled |
| D. | no-chain reaction takes place in atomic bomb while it takes place in nuclear reactor |
| Answer» C. the chain reaction in nuclear reactor is not controlled | |
| 19. |
Hydrogen bomb is based on the principle of |
| A. | nuclear fission |
| B. | nuclear fusion |
| C. | natural radioactivity |
| D. | artificial radioactivity |
| Answer» C. natural radioactivity | |
| 20. |
Natural radioactivity was discovered by |
| A. | Rutherfoed |
| B. | Becquerl |
| C. | Curic |
| D. | Schmidt |
| Answer» C. Curic | |
| 21. |
The activity of radioisotope change with |
| A. | temperature |
| B. | pressure |
| C. | chemical environment |
| D. | emmission of radiation |
| Answer» E. | |
| 22. |
Which one of the following is not radioactive ? |
| A. | Astanine |
| B. | Francium |
| C. | Tritium |
| D. | Zirconium |
| Answer» E. | |
| 23. |
Which one radiation has the highest energy ? |
| A. | -particle |
| B. | -particles |
| C. | -rays |
| D. | None of these |
| Answer» D. None of these | |
| 24. |
Natural radioactivity |
| A. | Rutherford |
| B. | Becquerel |
| C. | Curie |
| D. | Schmidt |
| Answer» C. Curie | |
| 25. |
A device used for the |
| A. | Mass spectrometer |
| B. | Cyclotron |
| C. | Nuclear reactor |
| D. | G.M. counter |
| Answer» E. | |
| 26. |
Which one of the following can be used to confirm whether drinking water contains a |
| A. | Microscope |
| B. | Lead plate |
| C. | Scintillation counter |
| D. | Spectrophotometer |
| Answer» D. Spectrophotometer | |
| 27. |
The difference between a |
| A. | no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction |
| B. | the chain reaction in nuclear reactor is controlled |
| C. | the chain reaction in nuclear reactor is not controlled |
| D. | no-chain reaction takes place in atomic bomb while it takes place in nuclear reactor |
| Answer» C. the chain reaction in nuclear reactor is not controlled | |
| 28. |
Match the List-I and List-II and select the correct answer using the codes given below the Lists |
| A. | 1-B, 2-A, 3-C, 4-E |
| B. | 1-B, 2-C, 3-A, 4-E |
| C. | 1-C, 2-B, 3-A, 4-E |
| D. | 1-C, 2-D, 3-A, 4-B |
| Answer» E. | |
| 29. |
The fuel in |
| A. | carbon |
| B. | sodium |
| C. | petroleum |
| D. | uranium |
| Answer» E. | |
| 30. |
In atomic reactors, |
| A. | Iubricant |
| B. | fuel |
| C. | linear of the ractor |
| D. | moderator |
| Answer» E. | |
| 31. |
Match the Column-I Radio-isotope with Column-II, medicinal use and select the correct matching |
| A. | 1-C, 2-D, 3-A, 4-B |
| B. | 1-A, 2-B, 3-C, 4-D |
| C. | 1-C, 2-D, 3-B, 4-A |
| D. | 1-D, 2-C, 3-B, 4-A |
| Answer» D. 1-D, 2-C, 3-B, 4-A | |
| 32. |
Emission of |
| A. | increases the number of protons in the atom |
| B. | increases the number of neutrons in the atom |
| C. | decreases the number of proton in the atom |
| D. | does not change the number of neutrons and protons in an atom |
| Answer» B. increases the number of neutrons in the atom | |
| 33. |
In which process, a nucleus spontaneously breaks down by |
| A. | Radioactive decay |
| B. | Fusion |
| C. | Refraction |
| D. | None of these |
| Answer» B. Fusion | |
| 34. |
The activity of |
| A. | temperature |
| B. | pressure |
| C. | chemical environment |
| D. | emmission of radiation |
| Answer» E. | |
| 35. |
Which one of the following is not |
| A. | Astanine |
| B. | Francium |
| C. | Tritium |
| D. | Zirconium |
| Answer» E. | |
| 36. |
Which one |
| A. | -particle |
| B. | -particles |
| C. | -rays |
| D. | None of these |
| Answer» D. None of these | |