31.

Consider the following reaction,

C₆H₅NO₂ $\stackrel{\mathrm{Sn}/ \mathrm{HCl}}{\to }$ X $\stackrel{{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COCl}}{\to }$ Y + HCl

What is Y?

• Acetanilide

• Benzanilide

• Azo-benzene

• Hydrazo-benzene

What are the oxidation numbers of nitrogen in NH₄NO₃ ?

• +3, -5

• -3, +5

• +3, -6

• +2, +2

Which one of the following reactions is an example of heterogeneous catalysis?

• 2CO (g) + O₂ (g) $\stackrel{\mathrm{NO} \left(\mathrm{g}\right)}{\to }$ 3CO₂

• 2SO₂ (g) + O₂ (g) $\stackrel{\mathrm{NO} \left(\mathrm{g}\right)}{\to }$ 2SO₃

• 2CO (g) + O₂ (g) $\stackrel{\mathrm{Pt} \left(\mathrm{s}\right)}{\to }$ 2CO₂

• CH₃CHO (g) $\stackrel{{\mathrm{I}}_2 \left(\mathrm{g}\right)}{\to }$ CH₄ + CO

During the electrolytic reduction of alumina, the reaction at cathode is

• 2H₂O → O₂ + 4H⁺ + 4e^-

• 3F^- → 3F + 3e^-

• Al³⁺ + 3e^- → Al

• 2H⁺ + 2e^- → H₂

What are the products obtained when ammonia is reacted with excess chlorine?

• N₂ and NCl₃

• N₂ and HCl

• N₂ and NH₄Cl

• NCl₃ and HCl

What are the products formed when chlorine is passed through aqueous hypo solution?

• Na₂SO₃ + HCl + S

• Na₂SO₃ + SO₃ + HCl

• Na₂SO₄ + HCl + S

• Na₂SO₄ + HCl + SO₂

Which one ofthe following orderis correct for the bond energies of halogen molecules?

• I₂ > Cl₂ > Br₂

• Br₂ > Cl₂ > I₂

• I₂ > Br₂ > Cl₂

• Cl₂ > Br₂ > I₂

Which one of the following halogens liberates oxygen, when passed through hot concentrated KOH solution ?

• I₂

• Cl₂

• Br₂

• F₂

One ampere of current is passed for 9650 seconds through molten AlCl₃. What is the weight in grams of Al deposited at cathode? (atomic weight of Al = 27)

• 0.9

• 9.0

• 0.09

• 90.0

Molten CuCl₂ is electrolysed using platinum electrodes. The reaction occurring at anode is

• 2Cl^- → Cl₂ (g) + 2e^-

• Cl₂(g) + 2e^- → 2Cl

• Cu²⁺ + 2e^- → Cu (s)

• Cu(s) → Cu²⁺ + 2e^-