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Revise smart, understand Better

Acid-Base Equilibrium
Atomic Structure And Related Patterns In The Periodic Table
Bonding And Structure, And Intermolecular Forces
Chemical Equilibrium
D-Block Elements (Transition Elements)
DESCRIPTIVE INORGANIC CHEMISTRY: Group IV (14)
DESCRIPTIVE INORGANIC CHEMISTRY: Halogens (GROUP VII or 17)
DESCRIPTIVE INORGANIC CHEMISTRY: Modern Periodic Table, Periodicity And S-Block Elements
Functional Group Chemistry And Reaction Mechanism
ORGANIC CHEMISTRY: Fundamentals
Raoult’s Law And Phase Equilibria
Reaction Kinetics
Redox Equilibrium
The Mole Concept

5/40 MCQs for:

Redox Equilibrium

What are the oxidation state of vanadium in the ions VO²⁺ and VO₄³⁻ respectively?

+6 and +8.

+4 and +5.

+6 and +5.

+4 and +8.

The half-reaction

MnO₄^-_(aq) + 8 H⁺_(aq) + 5e → Mn²⁺_(aq) + 4 H₂O_(l).

Is an oxidation half-reaction and occurs at the cathode.

Is a reduction half-reaction and occurs at the anode.

Is a reduction half-reaction and occurs at the cathode.

Is an oxidation half-reaction and occurs at the anode.

What happens to the oxidizing agent in an oxidation-reduction reaction?

It is reduced as it gains electrons

It is reduced as it loses electrons

It is oxidized as it gains electrons

It is oxidized as it loses electrons

What are the coefficients in front of K₂Cr₂O₇, FeSO₄, H₂SO₄, Cr₂(SO₄)₃, Fe₂(SO₄)₃, K₂(SO₄) and H₂O respectively when the following redox equation is balanced in an acidic medium:

k₂Cr₂O_{7 (aq)} + FeSO_{4 (aq)} + H₂SO_{4 (aq)} → Cr₂(SO₄)_{3 (aq)} + Fe₂(SO₄)_{3 (aq)} + K₂(SO₄)_(aq) + H₂O_(l).

2, 6, 7, 1, 3, 2, 7.

1, 6, 7, 1, 3, 7, 1.

2, 6, 7, 1, 3, 1, 7.

1, 6, 7, 1, 3, 1, 7.

The first three most electronegative elements in the periodic table in decreasing order are:

F, Cl, O.

F, O, Cl.

F, O, N.

N, O, F.