Page 371 - General Knowledge

GENERAL KNOWLEDGE 2019

C. Silica
D. Sodium 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

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

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

57. Bring out the incorrect usage
A. Heavy water – Moderator
B. DDT – Insecticide
C. Methyl Alcohol – Beverage
D. Liquid Ammonia – Refrigerant

58. What is Carbamide?
A. A Pesticide
B. A Fertilizer
C. A Textile Dye
D. An Explosive

59. Which among the following is the main constituent of vegetable oil and animal fats?
A. Glycogen
B. Triglyceride
C. Galactose
D. Diglyceride

60. What is the number of known crystalline phases of water?
A. 2
B. 4
C. 10
D. 15

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