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81.

Absolute alcohol is prepared by :

82.

Ether on carbonylation gives :

83.

Ethanol shows intermolecular H-bonding .Which of the following property is affected by H-bonding ?

The carbon adjacent to the functional group is called $α$ carbon and the hydrogens attached to it , are referred as $α$ -hydrogens .

The formula of diethyl ether is CH₃CH₂OCH₂CH₃ .

Here-O- is the functional group . Thus ,

CH₃CH₂OCH₂CH₃ i.e. , 4 $α$ hydrogen .

85.

Which is the major product formed when C₆H₅CONHC₆H₅ undergoes nitration?

86.

Williamson's synthesis is used to prepare :

87.

88.

89.

Salicylic acid can be easily prepared by reaction between

90.

Reaction of aniline with HNO₂ followed by treatment of dilute acid gives