51.

When CH₂=CH-O-CH₂-CH₃ reacts with one mole of HI, one of the products formed is

• ethane

• ethanol

• iodoethene

• ethanal

0.44 g of a monohydric alcohol when added to methylmagnesium iodide in ether liberates at STP, 112 cm³ of methane. With PCC the same alcohol forms a carbonyl compound that answers silver mirror test. The monohydric alcohol is

• H₃C-CH(OH)-CH₂-CH₃

• (CH₃)₃C-CH₂OH

• H₃C-CH(OH)-CH₂-CH₂-CH₃

• (CH₃)₂CH-CH₂OH

Y is 

Acetophenone cannot be prepared easily starting from

• C₆H₅CH(OH)CH₃

• C₆H₅CH₃

• C₆H₅C≡CH

• C₆H₆

An incorrect statement with respect to S_N1 and S_N2 mechanisms for alkyl halide is

• A strong nucleophile in an aprotic solvent increases the rate or favours S_N2 reaction.

• Competing reaction for an S_N2 reaction is rearrangement.

• S_N1 reactions can be catalysed by some Lewis acids.

• A weak nucleophile and a protic solvent increases the rate or favours S_N1 reaction.

Butylated hydroxyl toluene as a food additive acts as

• antioxidant

• flavouring agent

• colouring agnet

• emulsifier

'Terylene is not a

• copolymer

• polyester fibre

• chain growth polymer

• step growth polymer

Iodoform reaction is answered by all, except

• CH₃-CH(OH)-CH₂-COOH

• CH₃CHO

• CH₃-CH₂-OH

• CH₃-CH₂-CH₂OH

C₆H₅COOH $\underset{\left(\mathrm{ii}\right)\hspace{0.17em}∆}{\overset{\left(\mathrm{i}\right)\hspace{0.17em}{\mathrm{NH}}_3}{\to }} \mathrm{P} \stackrel{\mathrm{NaOBr}}{\to } \mathrm{Q} \underset{\left(\mathrm{ii}\right) \mathrm{Heat} \mathrm{at} 460 \mathrm{K}}{\overset{\left(\mathrm{i}\right)\hspace{0.17em}\mathrm{Conc}. {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}$ R

R is

• o-bromo sulphanilic acid

• sulphanilamide

• sulphanilic acid

• p-bromo sulphanilamide

The statement that is not correct is

• Aldose or ketose sugars in alkailne medium do not isomerise

• Carbohydrates are optically active

• Pentaacetate of glucose does not react with hydroxylamine

• Lactose has glycosidc linkage between C₄ of glucose and C₁ of galactose unit.