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 Multiple Choice QuestionsShort Answer Type

171.

Give reduction of phenol ?

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 Multiple Choice QuestionsLong Answer Type

172.

Discuss in brief the polymerisation reactions of alkenes ?

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 Multiple Choice QuestionsShort Answer Type

173.

Enlist three uses of ethylene.

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 Multiple Choice QuestionsLong Answer Type

174.

What are alkynes?

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175.

For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated:

left parenthesis straight i right parenthesis space space straight C subscript 4 straight H subscript 8 left parenthesis one space double space bond right parenthesis
left parenthesis ii right parenthesis space straight C subscript 5 straight H subscript 8 space left parenthesis one space triple space bond right parenthesis


(a) Isomers of C4H8, having one double bond are:





(b) Isomers of C5H8 having one triple bond are:






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176. Write structures of different isomers corresponding to the 5th member of alkyne series. Also, write IUPAC names of all the isomers ?
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 Multiple Choice QuestionsShort Answer Type

177.

How is acetylene obtained from:
(i) Ethylene dibromide?
(ii) Tetrabromoethane ?

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 Multiple Choice QuestionsLong Answer Type

178.

Discuss the preparation of higher alkynes.

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179.

Why do alkynes undergo electrophilic addition reactions ?

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 Multiple Choice QuestionsShort Answer Type

180. Alkynes are less reactive towards electrophilic addition reactions than alkenes. Explain.
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