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Question

1)CH4----X----C6H6
2)C2H5OH---X---C4H10
3)C2H4---X---C2H4

4)H3C-C=O--------------X---------CH2-C=O
-OH | -OH
NH2

Answer 1

2CH4=C2H2+3H2

C2H5OH+HBr=C2H5Br+H2O
2C2H5Br+2Na=C4H10+2NaBr

C2H4+H2=C2H6
C2H6=C2H4+H2

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