Compound (A) when heated with ethyl magnesium iodide in dry ether forms an addition product, which on hydrolysis forms compound (B) Compound (B) on oxidation form 3-pantanone. Hence (A) and (B) are respectively 

• propanal, 3-pentanol

• pentanol, 3-pentanol

• ethanal, pentanol

• acetone, 3-pentanol

The false statements among the following are

I. A primary carbocation is less stable than a tertiary carbocation.

II. A secondary propyl carbocation is less stable than allyl carbocation.

III. A tertiary free radical is more stable than a primary free radical.

IV. Isopropyl carbanion is more stable than ethyl carbanion.

• I and II

• II and III

• I and IV

• II and IV

513.

C₆H₅-NO₂ $\underset{\mathrm{NHCl}}{\overset{\mathrm{Zn}-\mathrm{dust}}{\to }}$ A $\underset{\mathrm{conc}. \mathrm{HCl}}{\overset{\mathrm{cold}}{\to }}$ B 

A and B respectively are

• 

• 

• 

• None of the above

X and Y in the above given reaction are

• picric acid, 2,4, 6-tribromophenol

• 5-nitrophenol acid, 5-bromosalicylic acid

• o-nitrophenol, o-bromophenol

• 3, 5-dinitrosalicylic acid, 3,5-dibromosalicylic acid

The reaction of 1-bromo-3-chlorocyclobutane with metallic sodium in dioxane under reflux conditions gives

Identify Z in the following reaction sequence

CH₃CH₂CH₂OH $\underset{160-180°\mathrm{C}}{\overset{\mathrm{Conce}. {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}$ X → Y $\underset{\left(\mathrm{ii}\right) {\mathrm{NaNH}}_2}{\overset{\left(\mathrm{i}\right) \mathrm{Alc}. \mathrm{KOH}}{\to }}$

• CH₃-CH(NH₂)-CN₂NH₂

• CH₃-CHOH-CH₂OH

• CH₃-C(OH)=CH₂

• CH₃-C≡CH

Which of the following reactions is used to prepare isobutane?

• Wurtz reaction of C₂H₅Br

• Hydrolysis of n-butylmagnesium iodide

• Reduction of propanol with red phosphorus and HI

• Decarboxylation of 3-methylbutanoic acid

Treating anisole with the following reagents, the major product obtained is 

I. (CH₃)₃CCl, AlCl₃

II. Cl₂, FeCl₃

III. HBr, Heat

Product is/ are

• 

• 

• Both (a) and (b)

• None is correct

Glycerol $\stackrel{{\mathrm{KHSO}}_4}{\to }$ A $\stackrel{\mathrm{HClO}}{\to }$ B

A and B respectively are

• CH₂=CH$\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}\mathrm{H}$ ; $\underset{\mathrm{Cl}}{\underset{|}{\mathrm{C}}}$H₂-C(OH)HCOH

• CH₂=CHCOH; C(OH)H₂-C(Cl)HOCH

• CH₃CH₂CHO; CH₃CH₂CH(OH)(Cl)

• CH₂=CHCOH; C(Cl)OH₂CH₂CHO