31.

When X amperes of current is passed through molten AlCl₃ for 96.5 s, 0.09g of aluminium is deposited. What is the value of X?

• 10 ampere

• 20 ampere

• 30 ampere

• 40 ampere

Which one of the following equation is correct for the reaction?

 N₂(g) + 3H₂(g) → 2NH₃ (g)?

• $3\frac{\mathrm{d}\left[{\mathrm{NH}}_3\right]}{\mathrm{dt}}=2\frac{\mathrm{d}\left[{\mathrm{H}}_2\right]}{\mathrm{dt}}$

• $3\frac{\mathrm{d}\left[{\mathrm{NH}}_3\right]}{\mathrm{dt}}=3\frac{\mathrm{d}\left[{\mathrm{H}}_2\right]}{\mathrm{dt}}$

• $2\frac{\mathrm{d}\left[{\mathrm{NH}}_3\right]}{\mathrm{dt}}= -3\frac{\mathrm{d}\left[{\mathrm{H}}_2\right]}{\mathrm{dt}}$

• $3\frac{\mathrm{d}\left[{\mathrm{NH}}_3\right]}{\mathrm{dt}}= -2\frac{\mathrm{d}\left[{\mathrm{H}}_2\right]}{\mathrm{dt}}$

An organic compound X gives a red precipitate on heating with Fehling's solution . Which one of the following reactions yields X as a major product?

• $\mathrm{HCHO} \underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2\mathrm{O}}{\overset{\left(\mathrm{i}\right)\hspace{0.17em}{\mathrm{CH}}_3\mathrm{MgI}}{\to }}$

• ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Br} + \mathrm{AgOH} \stackrel{∆}{\to }$

• $2{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Br} + {\mathrm{Ag}}_2\mathrm{O} \stackrel{∆}{\to }$

• ${\mathrm{C}}_2{\mathrm{H}}_2 + {\mathrm{H}}_2\mathrm{O} \underset{1\% {\mathrm{HgSO}}_4 {60}^{°}\mathrm{C}}{\overset{40\% {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}$

In the reaction, C₂H₅OC₂H₅ + CO   X.  What is X?

• Diethyl carbonate

• Ethyl carbonate

• Diethyl peroxide

• Ethyl propionate

Which one of the following gases is liberated when ethyl alcohol is heated with methyl magnesium iodide?

• Methane

• Ethane

• carbon dioxide

• Propane

 In the reaction sequence,

${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Cl} + \mathrm{KCN} \stackrel{{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}}{\to } \mathrm{X} \underset{∆}{\overset{{\mathrm{H}}_3\mathrm{O}°}{\to }}$

What is the molecular formula of Y?

• C₃H₆O₂

• C₃H₅N

• C₂H₄O₂

• C₂H₆O

Which one of the following compounds give aspirin on reacting with acetic anhydride in the presence of conc. H₂SO₄ ?

Aniline is not the major product in one of the following reactions. Identify that reaction

• ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{OH} + {\mathrm{NH}}_3 \underset{300°\mathrm{C}}{\overset{ {\mathrm{ZnCl}}_2}{\to }}$

• ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NO}}_2 + \mathrm{Zn} \mathrm{powder}\hspace{0.17em}\stackrel{\mathrm{alcoholic} \mathrm{KOH}}{\to }$

• ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{Cl} +{\mathrm{NH}}_3 \underset{{\mathrm{Cu}}_2\mathrm{O}}{\overset{ 200°\mathrm{C}}{\to }} \mathrm{high} \mathrm{pressure}$

• ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NO}}_2 + 6\left(\mathrm{H}\right) \underset{\mathrm{HCl}}{\overset{\mathrm{Fe} +{\mathrm{H}}_2\mathrm{O}}{\to }}$

Acid hydrolysis of X yields two different organic compounds. Which one of the following is X?

• CH₃COOH

• CH₃CONH₂

• CH₃COOC₂H₅

• (CH₃CO)₂O

Acetaldehyde forms a white crystalline precipitate on mixing with a ...... solution of ........

• acidic, Zn— Hg

• alcoholic, Na₂SO₃

• saturated aqueous, NaHSO₃

• aqueous, NaCl