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7) 2-methylbutane  1 2-methyl-2-chlorobutane  2 - 2-
methyl-2-butene  3 2-methyl-2,3-butanediol
8) propane  1 2-chloropropane  2 2-
propanol  3 propene  4 2-chloropropane
9) 1,2-dibromobutane  1 1-butene  2 2-
butanol  3 2-bromobutane  4 2- butene
10) 1-chloropropane  1 propene  2 2-propanol  3
2-chloropropane  4 2-cyanopropane
11) 1-butene  1 2-chlorobutane  2 2-butanol  3 2-
butene  4 2,3-butanediol
12) 2-methyl  1 1-butene  2 2-methyl-2-
butanol  3 2 methyl-2-chlorobutane  4 2-methyl-2-
butene
13) 1,2-dibromobutane  1 –1-butene  2 2-butanol
butanone 
 3 4 butanol
14) ethin chloroethene
chloroethane 
 1 2 ethanol  3 diethyl ethene
15) 1-bromo  1 2-methylpropane  2 2-
methylpropene  3 2-methyl-2-chloropropane  4 2-
methylpropanol
16) butane  1 2-bromobutane  2 2-butanol  3 2-
butene  4 2,3-butanediol
1 2
17) propane  2-chloropropane  2,3-
dimethylbutane  3 2, 3-dimethyl-2-chlorobutane
 2,3-dimethyl-2-butanol
 4
18) ethane  1 chloroethane  2 ethanol
ethene 
 3 4 ethanediol
19) 2-chloropropane  1 propene  2 2-propanol
propene 
 3 4 1,2-propanediol
20) ethane  1 bromoethane  2 butane  3 2-
4
chlorobutane  2-butanol