Chemistry General Knowledge Questions and Answers: Chemistry GK

Chemistry-General Knowledge questions and answers

81. Deep blue colour is imported to glass by the presence of  

A.  Cupric oxide
B.  Ferrous oxide
C.  Cobalt oxide
D.  Nickel oxide

82. What is the most common soil in sea water?  

A.  Sodium chloride
B.  Calcium carbonate
C.  Potassium chloride
D.  Magnesium sulphate

83. Select the one which is not a mixture?  

A.  Air
B.  Gasoline
C.  LPG
D.  Distilled water

84. Which one of the following types of glass can cut off ultraviolet rays?  

A.  soda glass
B.  pyrex glass
C.  jena glass
D.  crookes glass

85. The major ingrediation of leather is  

A.  Carbohydrate
B.  Collagen
C.  Polymer
D.  nuclei acid

86. Which one of the following metals is found in plaster of paris?  

A.  Calcium
B.  Magnesium
C.  Pottasium
D.  Sodium

87. The oxide of Nitrogen used in medicine as anaesthetic is  

A.  Nitrogen dioxide
B.  Nitric oxide
C.  Nitrous oxide
D.  Nitrogen pentoxide

88. Which variety of coal contains the highest percentage of carbon?  

A.  Anthracite
B.  Peat
C.  Bituminous
D.  Lignite

89. A polymeric substance used to make parachute is  

A.  Rayon
B.  Viscose
C.  Cotton
D.  Terylene

90. Carbon occurs in nature in the purest form as  

A.  Diamond
B.  Graphite
C.  Carbon black
D.  Coal

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