General Science Chemistry MCQs

Chemistry Objective (Multiple Choice) General Knowledge Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examination

11. With reference to the nuclear fuels, how the Fissile material is different from the Fertile material?
1. While Fissile material undergoes nuclear fission, Fertile material undergoes nuclear fusion
2. While Fissile material can be directly used, Fertile material can not be used directly in nuclear reactors
Choose the correct option from the codes given below:

[A] Only 1 is correct
[B] Only 2 is correct
[C] Both 1 & 2 are correct
[D] Neither 1 nor 2 is correct

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12. Which of the following chemicals being used as major ingredients of Bakery Industry in India, are said to cause cancer?

  1. Potassium bromate
  2. Potassium iodate
  3. Potassium sulfate
  4. Potassium chromate

Select the correct option from codes given below:

[A] 1 & 2 Only
[B] 2 & 3 Only
[C] 3 & 4 Only
[D] 1 & 4 Only

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13. Which of the following chemicals is also known as “Chinese snow”?

[A] Silver iodide
[B] Potassium nitrate
[C] Ammonium chloride
[D] Sodium phosphate

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14. Which of the following are used as chemical agents in war?

  1. Mustard Gas
  2. Phosgene
  3. Sarin
  4. VX

Select the correct option from codes given below:

[A] 1 & 3 Only
[B] 1, 3 & 4 Only
[C] 2 & 4 Only
[D] 1, 2, 3 & 4

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15. Which of the following states of matter has the weakest Intermolecular forces?

[A] Solids
[B] Liquids
[C] Gases
[D] It is same in solids, liquids and gases

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16. Which of these states of matter has the maximum density?

[A] Solids
[B] Liquids
[C] Gases
[D] None of the above

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17. What is the property of matter by which a body tends to regain its original configuration after the removal of deforming force known as?

[A] Plasticity
[B] Ductility
[C] Elasticity
[D] Malleability

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18. Which of the following is correct about the first ionization enthalpy of alkaline earth metals?

[A] It is higher than corresponding Group 1 metals
[B] It is lower than corresponding Group 1 metals
[C] No fix pattern exist
[D] None of the above

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19. Which of the following alkaline earth metals is the rarest in the earth crust?

[A] Calcium
[B] Strontium
[C] Radium
[D] Beryllium

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20. Which of the following is NOT correct about Group 14 elements?

[A] All of them are solids
[B] Melting points are much higher than those of corresponding elements of group 13
[C] Carbon is a non-metal
[D] Germanium is a metal

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