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221. Write a short note on Friedel Craft’s reaction ?

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222. Discuss the important addition reactions of benzene.

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223.

Discuss the oxidation reactions of arenes.

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224.

Write chemical equations for the combustion reaction of the following hydrocarbons:
Butane

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225.

Write chemical equations for the combustion reaction of the following hydrocarbons:
Pentene

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226.

Write chemical equations for the combustion reaction of the following hydrocarbons:
Hexyne

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228.

Write down the products of ozonolysis of 1, 2-dimethylbenzene (o-xylene). How does the result support Kekule structure for benzene?

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229. What happens when:

Benzene is treated with acetic anhydride in the presence of anhydrous AlCl₃.

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230. What happens when:

Toluene is heated with a mixture of concentrated nitric acid and concentrated sulphuric acid at 303 K.

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