51.

IUPAC name of H₃C—(OH)CH—CH₂—CHCOOH—CH₃ is 

• 4-hydroxy-1-methyl pentanoic acid

• 4-hydroxy-2-methyl pentanoic acid

• 2-hydroxy-4-methyl pentanoic acid

• 2-hydroxy-2-methyl pentanoic acid

In Buna-S, the symbol Bu stands for

• 1-butene

• n-butene

• 2-butene

• butadiene

Intramolecular hydrogen bonding is formed in

• H₂O

• salicyladehyde

• NH₃

• Benzophenone

Conversion of benzene to acetophenone can be brought by

• wurtz reaction

• wurtz- fittig's reaction

• Fridel crafts alkylation

• Friedel crafts acylation

Which of the following pairs are correctly matched?

	Reactants	Products
(i)	RX+ AgOH (aq)	RH
(ii)	RX + AgCN (alc)	RNC
(iii)	RX + KCN(alc)	RNC
(iv)	RX + Na(ether)	R-R

• only I

• I and II

• II and III

• II and IV

The compound formed when calcium acetate and calcium formate is distilled

• acetone

• acetaldehyde

• benzaldehyde

• acetophenone

Which of the following is strongly acidic?

• Phenol

• o-cresol

• p-nitrophenol

• p-cresol

Acetone and propanal are

• functional isomers

• position isomers

• geometrical isomers

• optical isomers

The reagent used to distinguish between acetaldehyde and benzaldehyde is

• Tollen's reagent

• Fehling's solution

• 2-4-dinitrophenyl hydrazine

• semicarbazide

Which one of the following gives amine on heating with amide?

• Br₂ in aqueous KOH

• Br₂ on alcoholic KOH

• Cl₂ in sodium

• sodium in ether