(a)  1 and 2
     (b)  2 and 4
     (c)  3 and 4
     (d)  1 and 3
Ans: (b)
111. When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them
     together? [CDS 2002]
     (a) Hydrogen bond formation
     (b) Vander walls forces
     (c) Covalent attraction
     (d) Dipole interaction
Ans: (a)
112. Which one of the following is used in welding industry? [CDS 2002]
     (a) Methane
     (b) Ethane
     (c) Acetylene
     (d) Benzene
Ans: (c)
113. Match the following:
     Drugs                   Action
     A. Antipyretics         1. Cure allergies
     B. Analgesics           2. Calm the nerves
     C. Tranquilizers        3..Relieve pain
     D. Antihistamines       4. Lower body temperature
          A         B        C         D
     (a)  1         2        3         4
     (b)  2         1        4         3
     (c)  4         3        2         1
     (d)  3         2        1         4
Ans: (c)
114. Match the following:
     Compound                Use
     A. Butadiene            1. Match industry
     B. Lead tetraethyl      2. Dye industry
     C. Phosphorus           3. Rubber industry
     D. Aniline              4. Petroleum industry
          A         B        C         D
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