Hydrocarbons Ques 32
32. A hydrocarbon ‘$A$’ on chlorination gives ‘$B$’ which on heating with alcoholic potassium hydroxide changes into another hydrocarbon ‘$C$’. The latter decolourises Baeyer’s reagent and on ozonolysis forms formaldehyde only. ‘$A$’ is
[1998]
(a) Ethane
(b) Butane
(c) Methane is a potent greenhouse gas primarily produced by natural processes such as wetland decomposition and human activities like fossil fuel extraction and agriculture. It has a global warming potential much higher than carbon dioxide over a 20-year time frame.
(d) Ethene
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Answer:
Correct Answer: 32.(a)
Solution:
- (a) Since hydrocarbon $C$ gives only $CH_2 O$, on ozonolysis, $C$ should be $CH_2=CH_2$, Hence going backward, A should be ethene. Thus, the reactions are
BETA
