31.

Which one of the following gives, on ozonolysis, both aldehydes and ketones?

• Me₂C = CHMe

• Me₂C = CMe₂

• MeCH₂ - C(Me) = CMe₂

• MeCH(Me) - CH = CHMe

Benzoylation of phenol in alkaline medium is known as

• Friedel-Craft's reaction

• Wurtz-Fittig reaction

• Schotten-Baumann reaction

• Sabatier Senderens reduction

Which one of the following compounds is most reactive towards nucleophilic addition?

• CH₃CHO

• PhCOCH₃

• PhCOPh

• CH₃COCH₃

Distillation of acetone with concentrated sulphuric acid gives

• diacetone alcohol

• mesityl oxide

• mesitylene 

• propene-2-ol

RCH₂CH₂OH can be converted to RCH₂CH₂COOH by the following sequence of steps

• PBr₃, KCN , H₃O⁺

• PBr₃, KCN, H₂/P⁺

• KCN, H₃O⁺

• HCN, PBr₃, H₃O⁺

Formation of cyanohydrin from a ketone is an example of

• electrophilic addition

• nucleophilic substitution

• nucleophilic addition

• electrophilic substitution

How many primary amines are possible with the formula C₄H₁₁N?

• 1

• 2

• 3

• 4

Which of the following will produce only one product on reduction with LiAlH₄?

• CH₃OCOCH₂CH₃

• CH₃CH₂OCOCH₂CH₃

• CH₃CH₂OCOCH₃

• CH₃CH₂OCOCH₂CH₂CH₃

Which one of the following pairs gives effervescence with aqueous NaHCO₃?

I. CH₃COCl

II. CH₃COCH₃

III. CH₃COOCH₃

IV. CH₃COOCOCH₃

• I and III

• I and IV

• II and III

• I and III

A tripeptide is written as glycine-alanine -glycine. The correct structure of the tripeptide is