General Science - Chemistry MCQs
51. Kimberley Process” is related to which among the following ?
[A] Gold
[B] Diamonds
[C] Semi Precious Stones
[D] Aluminium
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Correct Answer: B [Diamonds]
52. Which among the following protein is responsible for maintenance of osmotic pressure?
[A] Beta macroglobulin
[B] Gamma globulin
[C] immunoglobulin
[D] albumin
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Correct Answer: D [albumin]
53. Pearl is mainly made up of which among the following?
[A] Protein
[B] Calcium Carbonate
[C] Silica
[D] Sodium Carbonate
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Correct Answer: B [Calcium Carbonate]
54. As we all know that, Gunpowder is a mixture of sulfur, charcoal, and potassium nitrate. Which among these components adds in speeding up the burning of the Gun Powder?
[A] Only Potassium Nitrate
[B] Only Charcoal
[C] Only Sulphur
[D] Both Sulphur and Potassium Nitrate
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Correct Answer: C [Only Sulphur]
55. Normal” rainfall is slightly acidic (and a pH of 5.6 has been assigned which might be somewhere near 5 ) because of the presence of _______?
[A] Nitric Oxide
[B] Sulphuric Acid
[C] Nitric Acid
[D] Carbonic Acid
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Correct Answer: D [Carbonic Acid]
56. Which among the following is not correctly matched:
[A] Brass: copper and zinc
[B] Duralumin : Copper and aluminum
[C] Constantan: Copper and Nickel
[D] White Gold- Gold and Silver
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Correct Answer: D [White Gold- Gold and Silver]
Notes:
White Gold has no silver at all. It has nickel, manganese or palladium usually
57. Bring out the incorrect usage
[A] Heavy water – Moderator
[B] DDT – Insecticide
[C] Methyl Alcohol – Beverage
[D] Liquid Ammonia – Refrigerant
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Correct Answer: C [Methyl Alcohol – Beverage]
Notes:
Methyl Alcohol or methanol is frequently used as a denaturant additive for ethanol manufactured for industrial uses.
58. What is Carbamide?
[A] A Pesticide
[B] A Fertilizer
[C] A Textile Dye
[D] An Explosive
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Correct Answer: B [A Fertilizer]
Notes:
Carbamide is another name of Urea, an organic compound with chemical formula CO(NH2)2. This name indicates that Urea is an amide in which two –NH2 groups are joined by a carbonyl (C=O) functional group.
59. Which among the following is the main constituent of vegetable oil and animal fats?
[A] Glycogen
[B] Triglyceride
[C] Galactose
[D] Diglyceride
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Correct Answer: B [Triglyceride]
60. What is the number of known crystalline phases of water?
[A] 2
[B] 4
[C] 15
[D] 18
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