41.

Aspirin is an acelytation product of

• o-hydroxybenzoic acid

• o-hydroxybenzene

• m-hydroxybenzoic acid

• p-dihydroxybenzene

For the sequence of reactions

$\mathrm{A} \stackrel{{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{MgI}}{\to } \mathrm{B} \stackrel{{\mathrm{H}}_2\mathrm{O}/ {\mathrm{H}}^{+}}{\to } \mathrm{ter}-\mathrm{pentyl} \mathrm{alcohol}$

The compound A in the sequence is

• 2-butanone

• acetaldehyde

• acetone

• propanal

Which of the following is the weakest base?

• Ethyl amine

• Ammonia

• Dimethyl amine

• Methyl amine

Rayon is

• natural silk

• artificial silk

• regenerated fibre

• synthetic fibre

Tranquilisers are also known as

• psychosomatic durgs

• psychoterapeutic drugs

• psychosystolic drugs

• None of the above

The compound, which give a positive ninhydrin test and a negative Benedict's solution test, is

• a monosaccharide

• a disaccharide

• a lipid

• a protein

The alcohol that produces turbidity immediately with ZnCl₃/conc. HCl at room temperature

• 1-hydroxy butane

• 2-hydroxy butane

• 2-hydroxy-2-methyl propane

• 1-hydroxy-2-methyl propane

An ester (A) with molecular formula C₉H₁₀O₂ was treated with excess of CH₃MgBr and the complex so formed was treated with H₂SO₄ to give an olefin (B). Ozonolysis of (B) gave a ketone with molecular formula C₈H₈O which shows positive iodoform test. The structure of (A) is

• C₆H₅COOC₂H₅

• C₆H₅COOC₆H₅

• C₆H₅COOCH₃

• p.H₃CO-C₆H₄-COCH₃

Iodoform test is not given by

• 2-pentanone

• ethanol

• ethanal

• 3-pentanone

The IUPAC name of 

• 4-propoxy pentane

• pentyl-propyl ether

• 2-propoxy pentane

• 2-pentoxy propane