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 Multiple Choice QuestionsShort Answer Type

201.

You are given samples of ethane, ethene and ethyne in three different containers. How will you distinguish them?

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 Multiple Choice QuestionsLong Answer Type

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202.

What are aromatic hydrocarbons or arenes?


Hydrocarbons and their alkyl, alkenyl and alkyl derivatives which contain one or more benzene ring either fused or isolated in their molecules are called aromatic hydrocarbons. They are also called arenes. Since such compounds resemble benzene in almost all of their properties, they are also called benzenoid compounds. A few members of the family are,



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203.

Explain isomerism in arenes.

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204.

Discuss the structure of benzene with special reference to Kekule structure. 

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205. Discuss the molecular orbital structure of benzene (Delocalisation of straight pi-electrons).
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 Multiple Choice QuestionsShort Answer Type

206.

What do you mean by delocalisation of straight pi-electrons?

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207.

Benzene ring has three double bonds in it but is still quite stable. Explain.

Or

Why is benzene extra-ordinary stable though it contains three double bonds?

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208. Why carbon-carbon distance in benzene is intermediate between carbon-carbon single and double bond?
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 Multiple Choice QuestionsLong Answer Type

209. What is resonance? Discuss the resonance in benzene. What is the effect of resonance ?
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 Multiple Choice QuestionsShort Answer Type

210.

What is resonance energy?

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