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. Which acid is described as HOOCCOOH?

[A] Oxalic Acid
[B] Acetic Acid
[C] Carbonic Acid
[D] Citric Acid

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12. Haematite & Magnetite are ______?

[A] Iron Ores
[B] Copper Ores
[C] Manganese Ores
[D] Zinc Ores

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13. Kimberley Process” is related to which among the following ?

[A] Gold
[B] Diamonds
[C] Semi Precious Stones
[D] Aluminium

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14. Which among the following is the unit of the scale used for measurement of the spicy heat of a chili pepper?

[A] Smith
[B] Wright
[C] Orville
[D] Scoville

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15. Which among the following minerals is also known as Horn Silver?

[A] Silver Iodide
[B] Silver Chroride
[C] Zinc Phosphate
[D] Silver Sulphide

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16. Which among the following was first human-made plastic?

[A] Bakelite
[B] Polyethene
[C] Celluloid
[D] Nylon

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17. Which of the following chemicals are used in dry cleaning?

  1. Naphtha
  2. Benzene
  3. Tetrachloroethylene

Select the correct option from the codes given below:

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

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18. The Modern periodic table has__: 

[A] seven periods and eighteen groups
[B] nine periods and eighten groups
[C] seven periods and twenty one groups
[D] nine periods and twenty one groups

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19. Consider the following statements:

  1. The sulphur content in sour crude oil is higher in comparison to sweet crude oil
  2. Brent crude oil is a sour crude oil
  3. Most of Brent crude oil comes from North Sea

Which among the above statements is / are correct?

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

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20. Silica gel is used in a transformer:

  1. as a coolant
  2. to  remove the moisture from air
  3. to decrease the dielectric strength of transformer oil

Which of the above statements is/are correct?

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

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