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Haloalkanes and Haloarenes

Short Answer Type

151. Write the nucleophilic reaction for the conversion of haloalkanes to primary amine.

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152. Write the nucleophilic reaction for the conversion of haloalkanes to thio ether.

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153. Write the nucleophilic reaction for the conversion of haloalkanes to nitro alkane.

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154. Write the nucleophilic reaction for the conversion of haloalkanes to alkyl nitrite.

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155. Write the nucleophilic reaction for the conversion of haloalkanes to alkanes.

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156. When a haloalkane reacts with AgNO₂ then nitroalkane is formed but the reaction of KNO₂ with a haloalkane gives alkyl nitrite. Give reasons and write the two reactions.

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157. Give an example of elimination reaction shown by haloalkanes.

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158.

What is meant by dehydrohalogenation?

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159. What is Grignard reagent and is it prepared?

Grignard reagents: Alkyl magnesium halides (RMgX) are called Grignard reagents.
Preparation of Grignard reagents: When a solution of alkyl halide (R—X) in ether is allowed to stand over magnesium turning for some time then metal gradually dissolves. In this reaction alkyl magnesium halide is formed. This compound is called Grignard reagent.

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160. Write the names of the main products obtained when Bromoethane is treated with an aqueous alkali.

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