A         B          C          D
     (a)  3         1          4          5
     (b)  5         2          1          3
     (c)  1         2          3          4
     (d)  3         2          1          4
Ans: (d)
118. Match the following:
     A. Aerosol     1. Butter
     B. Emulsion 2. Fog
     C. Gel         3. Ink
     D. Sol         4. Milk
          A         B          C          D
     (a)  1         2          3          4
     (b)  2         4          1          3
     (c)  3         2          4          1
     (d)  4         2          2          1
Ans: (b)
119. Match the following:
     A. Best conductor of heat and electricity   1. Gold
     B. Most abundant metal                      2. Lead
     C. Most malleable metal                     3. Aluminium
     D. Poorest conductor of heat                4. Silver
          A         B          C          D
     (a)  1         3          2          4
     (b)  2         3          4          1
     (c)  3         2          4          1
     (d)  4         3          1          2
Ans: (d)
120. In which of the following processes light energy is converted into chemical energy? [CBI1993]
     (a) Respiration
     (b) Fermentation
     (c) Photosynthesis
     (d) Photorespiration
Ans: (c)
121. Water is a compound because: [NDA 1995]
     (a) it exists as a solid, a liquid or a gas
     (b) it contains hydrogen and oxygen
     (c) it contains two different elements joined by chemical bonds
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