Chemistry - 07

Chemistry [Science] plays a major role for candidates preparing for competitive exams like University Assistant. Get instant Questions of Science - Chemistry from here. Kerala PSC Helper is a one source destination for all Chemistry to crack competitive exams conducted by Kerala Public Service Commission.
61. Who discovered the radio carbon dating?
Answer :- Willard Libby

62. Which element is used for radiographic imaging?
Answer :- Barium

63. Name the acid in which the glass dissolves?
Answer :- Hydrofluoric Acid

64. The poisonous gas that caused Bhopal Tragedy was ............
Answer :- Methyl isocyanate

65. The chemical that used to prevent blood clotting in the blood banks is .........
Answer :- Sodium Citrate

66. Which chemical is common in all types of glasses?
Answer :- Silica

67. Why lead is added to petrol?
Answer :- To increase octane rating

68. Which industry's by-product is molasses?
Answer :- Sugar industry

69. Which nutrient is essential for plants in the formation of chlorophyll?
Answer :- Magnesium

70. Which protein is present in wool?
Answer :- Alpha keratin

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