NEET Chemistry: Questions 73 - 78 of 1110

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Question number: 73

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

MCQ▾

Question

According to Faraday’s first law of electrolysis mass of substance (W) is equal to?

Choices

Choice (4) Response

a.

W=Z×I×t

b.

W=Z/It

c.

W=Zt

d.

W = Z + I × t

Question number: 74

» Redox Reactions & Electrochemistry » Electrochemical Cells

MCQ▾

Question

KCl is used in salt bridge because?

Choices

Choice (4) Response

a.

It forms a good jelly with agar-agar

b.

The transference number of K+ and Cl ions is almost equal

c.

It is a strong electrolyte

d.

It is a good conductor of electricity

Question number: 75

» Redox Reactions & Electrochemistry » Fuel Cells

MCQ▾

Question

The efficiency of fuel cell is given by?

Choices

Choice (4) Response

a.

G/S

b.

H/G

c.

S/H

d.

∆ G/∆ H

Question number: 76

» Redox Reactions & Electrochemistry » Electrolytic and Metallic Conduction

MCQ▾

Question

Which of the following equation is used to calculate the mass of solid substances deposited at an electrode?

Choices

Choice (4) Response

a.

Z = E - 96500

b.

Z = E + 96500

c.

Z = E × 96500

d.

Z=E/96500

Question number: 77

» Redox Reactions & Electrochemistry » Electrolytic and Metallic Conduction

MCQ▾

Question

How much current strength is required to liberate 10 g of chlorine from sodium chloride solution in1 hour?

Choices

Choice (4) Response

a.

7.55 ampere

b.

6.78 ampere

c.

7.98 ampere

d.

8.97 ampere

Question number: 78

» Redox Reactions & Electrochemistry » Electronic Concepts of Oxidation and Reduction

MCQ▾

Question

The tendencies of the electrodes made up of Cu, Zn and Ag to release electrons when dipped in their respective salt solutions decrease in the order?

Choices

Choice (4) Response

a.

Zn>Cu>Ag

b.

C u > Z n > A g

c.

Z n > A g > C u

d.

Ag>Cu>Zn

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