GENERAL KNOWLEDGE | QUIZ | CHEMISTRY | 4 | QUESTIONS BASED ON CHEMISTRY

DIRECTIONS : Questions based on Chemistry.

16.     Which one of the following is correct ?
Butter is
      A.  A super cooled oil
      B.  an emulsion
      C.  a molecular solid
      D.  none of these
 Ans: B.

17.     Which one of the following is an element ?
      A.  Topaz
      B.  Diamond
      C.  Ruby
      D.  Sapphire
 Ans: B.

18.     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
 Ans: C.

19.     In vulcanisation, natural rubber is heated with
      A.  carbon
      B.  Silicon
      C.  Sulphur
      D.  Phosphorus
 Ans: C.

20.     Which variety of glass is heat resistant?
      A.  Hard glass
      B.  Flint glass
      C.  Pyrex glass
      D.  Bottle glass
Ans: C.