Redox Reactions & Electrochemistry (NEET Chemistry): Questions 38 - 43 of 50

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Question number: 38

» Redox Reactions & Electrochemistry » Electrolytic and Metallic Conduction

MCQ▾

Question

Degree of ionization does not depend on?

Choices

Choice (4) Response

a.

Molecular mass of the electrolyte

b.

Nature of electrolyte

c.

Nature of solvent

d.

Dilution

Question number: 39

» Redox Reactions & Electrochemistry » Electrolytic and Metallic Conduction

MCQ▾

Question

An electric current of one amp is passed through acidulated water for 160 minutes and 50 seconds. What is the volume of the hydrogen liberated?

Choices

Choice (4) Response

a.

11.2 L

b.

22.4 L

c.

1.12 L

d.

2.24 L

Question number: 40

» Redox Reactions & Electrochemistry » Types of Electrodes

MCQ▾

Question

The standard reduction potential of hydrogen is zero because?

Choices

Choice (4) Response

a.

Hydrogen has single electron

b.

Hydrogen is easiest to oxidize

c.

It is assumed

d.

Hydrogen is electronegative

Question number: 41

» Redox Reactions & Electrochemistry » Relation Between Cell Potential and Gibbs' Energy Change

MCQ▾

Question

The free energy change G is related to emf of the cell E as?

Choices

Choice (4) Response

a.

G=RTnFlogE

b.

∆ G =-nFE

c.

E =-nF∆G

d.

∆ G =-nFRTlogE

Question number: 42

» Redox Reactions & Electrochemistry » Electrolysis (Faraday's First and Second Laws)

MCQ▾

Question

What is the ratio of fusion mixture containing alumina, Cryolite ( Na3AlF6), Fluorspar (CaF2) , used in the electrolytic reduction of pure alumina?

Choices

Choice (4) Response

a.

60: 20: 60

b.

20: 60: 20

c.

20: 20: 60

d.

60: 20: 20

Question number: 43

» Redox Reactions & Electrochemistry » Oxidation Number

MCQ▾

Question

A current of 2 ampere when passed for 5 hours through a molten salt deposits 22.2 g of metal of atomic mass 177. The oxidation state of the metal in metal salt is?

Choices

Choice (4) Response

a.

+4

b.

+3

c.

+1

d.

+2

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