51.

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

C₆H₅NH₂ $\underset{0°\mathrm{C}}{\overset{{\mathrm{NaNO}}_2/ \mathrm{HCl}}{\to }}$ X $\stackrel{\mathrm{CuCN}}{\to }$ Y $\stackrel{{\mathrm{H}}_2\mathrm{O}/ {\mathrm{H}}^{+}}{\to }$ Z, Z i identified as

• C₆H₅-NH-CH₃

• C₆H₅-CH₂-NH₂

• C₆H₅-CH₂-COOH

• C₆H₅-COOH

Which of the following does not undergo benzoin condensation?

C^* is with the product

• CO₂

• 

• Both (a) and (b)

• None of the above

Benzene diazonium chloride on treatment with hypophosphorus acid and water yield benzene. Which of the following is used as a catalyst in this reaction?

• LiAlH₄

• Red P

• Zn

• Cu⁺