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Haloalkanes and Haloarenes

Short Answer Type

81. Gaseous hydrogen halides and not their aqueous solutions (i.e., hydrohalic acids) are used for the preparation of alkyl halides from alkenes. Why?

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82. Alkyl iodides develop coloration on long standing particularly in light. Give reason.

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83. What happens when an alkyl halide is treated with AgCN and the product is reduced?

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84.

How is acetone converted into iodoform?

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85. Write the IUPAC name of :

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86. Write the IUPAC name of :

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87. Write the structure of DDT.

structure of DDT

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88.

Give IUPAC name for C₆H₅CH₂CH₂Cl.

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89.

An alkyl halide having molecular formula C₄H₉Cl is optically active. What is its structure?

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90.

Out of chlorobenzene and chloro-methane which is more reactive towards nucleophilic substitution reactions?

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