Chemistry General Knowledge Questions and Answers: Chemistry GK
Chemistry-General Knowledge questions and answers
71. What are soaps?
A. Salts of silicates
B. Esters of heavy fatty acids
C. Sodium, salts of heavier fatty acids
D. Mixture of glycerol and alcohols
Answer : C. Sodium, salts of heavier fatty acids
72. In vulcanisation, natural rubber is heated with
A. carbon
B. Silicon
C. Sulphur
D. Phosphorus
Answer : C. Sulphur
73. Which variety of glass is heat resistant?
A. Hard glass
B. Flint glass
C. Pyrex glass
D. Bottle glass
Answer : C. Pyrex glass
74. What is the chemical name for marble?
A. Potassium nitrate
B. Calcium carbonate
C. Titanium dioxide
D. Calcium bicarbonate
Answer : C. Titanium dioxide
75. Which of the following metals is in liquid state at normal room temperature?
A. Gallium
B. Radon
C. Silicon
D. Sodium
Answer : A. Gallium
76. The chemical name of bauxite is
A. Aluminium oxide
B. Aluminium chloride
C. Aluminium sulphite
D. Hydrated aluminium oxide
Answer : D. Hydrated aluminium oxide
77. Which of the following is the hardest element?
A. Copper
B. Diamond
C. Iron
D. Silicon
Answer : B. Diamond
78. Biogas mainly contains
A. Oxygen
B. Carbon dioxide
C. Methane
D. Nitrogen
Answer : C. Methane
79. Which among the following gases is used to manufacture chloroform?
A. Methane
B. Propane
C. Ether
D. Radon
Answer : A. Methane
80. Which metal was first used by man?
A. Aluminium
B. Gold
C. Iron
D. Brass
Answer : A. Aluminium
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Rajesh Bhatia
A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at linkedin.com/in/rajesh-bhatia-7395a015b/.
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