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

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72. In vulcanisation, natural rubber is heated with  

A.  carbon
B.  Silicon
C.  Sulphur
D.  Phosphorus

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73. Which variety of glass is heat resistant?  

A.  Hard glass
B.  Flint glass
C.  Pyrex glass
D.  Bottle glass

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74. What is the chemical name for marble?  

A.  Potassium nitrate
B.  Calcium carbonate
C.  Titanium dioxide
D.  Calcium bicarbonate

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75. Which of the following metals is in liquid state at normal room temperature?  

A.  Gallium
B.  Radon
C.  Silicon
D.  Sodium

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76. The chemical name of bauxite is  

A.  Aluminium oxide
B.  Aluminium chloride
C.  Aluminium sulphite
D.  Hydrated aluminium oxide

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77. Which of the following is the hardest element?  

A.  Copper
B.  Diamond
C.  Iron
D.  Silicon

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78. Biogas mainly contains  

A.  Oxygen
B.  Carbon dioxide
C.  Methane
D.  Nitrogen

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79. Which among the following gases is used to manufacture chloroform?  

A.  Methane
B.  Propane
C.  Ether
D.  Radon

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80. Which metal was first used by man?  

A.  Aluminium
B.  Gold
C.  Iron
D.  Brass

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