211.

1-butyne on oxidation with hot alkaline KMnO₄ would yield. Which of the following as end product?

• CH₃CH₂CH₂COOH

• CH₃CH₂COOH

• CH₃CH₂CH₂COOH + CO₂ + H₂O

• CH₃CH₂CH₂COOH + HCOOH

 A cubic unit cell of a metal with a molar mass of 63.55 g mol^-1 has an edge length of 362 pm. Its density is 8.92 g cm^-3. The type of unit cell is

• Primitive

• Face centred

• End centred

• Body Centred

Which of the following is the major product in the reaction of HOBr with propene?

• 2-bromo, 1-propanol

• 3-bromo,1-propanol

• 2-bromo, 2-propanol

• 1-bromo, 2-propanol

Which of the following is the correct IUPAC name?

• 3,4 -dimethyl pentanoyl chloride

• 1-chloro-1-oxo-2, 3-dimethyl pentane

• 2-ethyl-3-methyl butanoyl chloride

• 2,3-dimethyl pentanoyl chloride

The pair of boiling point and compound are given as,

C₆H₆ (80$°$C); CH₃OH (65$°$C); C₆H₅NO₂ (212$°$C) and C₆H₅NH₂ (184$°$C)

Which will show lowest vapour pressure at room temperature?

• C₆H₆

• CH₃OH

• C₆H₅NO₂

• C₆H₅NH₂

In the following conversion,

Identify 'A' from the following option

• NaBD₄

• LiAID₄

• Mg, ether/D₂O

• BH₃, D₂O

Ethers like ROR can be cleaved by concentrated HI but not by HCl because

• I^- is a weaker nucleophile than Cl^-

• I^- is stronger nucleophile than Cl^-

• S_N1 mechanism carried out in this reaction is rapidly in presence of HI.

• None of the above

Consider the following reaction sequence

CH₃OH $\stackrel{\mathrm{HBr}}{\to }$ 'A' $\stackrel{KCN}{\to }$ 'B' $\stackrel{{\mathrm{H}}_2/ \mathrm{Ni}}{\to }$ 'C' $\stackrel{{\mathrm{HNO}}_2}{\to }$ 'D'

Choose the correct option regarding the different products obtained in the above reaction sequence:

• 'D' is an alcohol consisting one carbon more than the starting alcohol

• Product 'B' is formed via S_N2-pathway

• 'C' is an amine

• All of the above

The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of

• acyl chloride > acid anhydride > ester > amide

• ester > acyl chloride > amide > acid anhydride

• acid anhydride > amide > ester > acyl chloride

• acyl chloride> ester> acid anhydride > amide

The suitable reaction steps to carry out the following transformation is

• $\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2{\mathrm{O}}_2, \mathrm{NaOH}}{\overset{\left(\mathrm{i}\right) {\mathrm{BH}}_3, \mathrm{THF}}{\to }} \stackrel{{\mathrm{HIO}}_4}{\to }$

• $\underset{({\mathrm{CH}}_3{)}_3\mathrm{C}.\mathrm{COOH}, {\mathrm{OH}}^{-}}{\overset{{\mathrm{OsO}}_4}{\to }} \underset{{\mathrm{H}}_2\mathrm{O}}{\overset{{\mathrm{K}}_3{\mathrm{Cr}}_2{\mathrm{O}}_7.{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}$

• $\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2{\mathrm{O}}_2, \mathrm{NaOH}}{\overset{\left(\mathrm{i}\right) {\mathrm{BH}}_3, \mathrm{THF}}{\to }} \underset{{\mathrm{CH}}_2{\mathrm{Cl}}_2}{\overset{\mathrm{PCC}}{\to }}$

• $\stackrel{{\mathrm{H}}_2\mathrm{O}, {\mathrm{H}}_2{\mathrm{SO}}_4 \left(\mathrm{dil}\right)}{\to } \underset{{\mathrm{CH}}_2{\mathrm{Cl}}_2}{\overset{\mathrm{PCC}}{\to }}$