Redox Reaction ...

Direction (Q. Nos. 1-18) This section contains 18 multiple choice questions. Each question has four
choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.

Q. Oxidation can be defined as the terms

I. gain of electron and hydrogen
II. gain of oxygen and loss of electron
III. increase in oxidation number
IV. decrease in oxidation number

Select the correct terms

Reduction is defined in terms of

I. electronation and hydrogenation
II. deelectronation and gain of oxygen
III. increase in oxidation number
IV. decrease in oxidation number

Select the correct terms

In balancing the half-reaction, CN^- → CNO^-

The number of electrons that must be added is 

Select the set of compounds with oxidation-reduction duality.

In the following balanced reaction,

I⁻ reduces IO₃^- and I₂ and itself oxidised to I₂ in acidic medium. Thus, final reaction is

H₂O can be oxidised to

Consider the following reactions,

I. Zn + dil. H₂SO₄ → ZnSO₄ + H₂
II. Zn + conc. H₂SO₄ → ZnSO₄+ SO₂ + H₂O

Oxidising agents in I and II are

In the following reactions except in one, oxygen is the reducing agent. Exceptional reaction is

In the following reaction,

Which ions are not balanced?

Coefficient x, y and z are respectively 

Which of the following species does not show disproportionation reaction?

Which is the intramolecular oxidation-reduction reaction?

Consider the following experimental facts,

I. When Cl₂ gas is passed into Kl solution containing CHCI₃, violet colour appears in CHCI₃ layer.
II. When Cl₂ gas is passed into KBr solution containing CHCI₃, orange colour appears in CHCI₃ layer.
III. When Cl₂ gas is passed into a solution containing KBr, Kl and KCI, containing CHCI₃, violet colour appears in CHCI₃ layer.

Select the correct experimental facts.

Based on the following reaction,

It can be concluded that

For the redox reaction,

x, y and z are 

In the following conversion of chromite into soluble chromium salt
4Fe(CrO₂)₂+ 8Na₂CO₃ + 7O₂ --> 2Fe₂O₃ + 8Na₂CrO₄ + 8CO₂ 

There is 

In which of the following reactions H₂O₂ acts as a reducing agent?