NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 74 - 79 of 1258

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Question number: 74

» Redox Reactions & Electrochemistry » Electrochemical Cells

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MCQ▾

Question

KCl is used in salt bridge because?

Choices

Choice (4) Response

a.

It forms a good jelly with agar-agar

b.

It is a good conductor of electricity

c.

It is a strong electrolyte

d.

The transference number of and ions is almost equal

Question number: 75

» Redox Reactions & Electrochemistry » Fuel Cells

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MCQ▾

Question

The efficiency of fuel cell is given by?

Choices

Choice (4) Response

a.

b.

c.

∆ G / ∆ H

d.

Question number: 76

» Redox Reactions & Electrochemistry » Electrolytic and Metallic Conduction

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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.

b.

Z = E + 96500

c.

Z = E × 96500

d.

Z = E - 96500

Question number: 77

» Redox Reactions & Electrochemistry » Electrolytic and Metallic Conduction

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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.

8.97 ampere

b.

6.78 ampere

c.

7.98 ampere

d.

7.55 ampere

Question number: 78

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

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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.

C u > Z n > A g

b.

c.

Z n > A g > C u

d.

Question number: 79

» Redox Reactions & Electrochemistry » Electrode Potentials

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MCQ▾

Question

Which one is the wrong statement about electrochemical series?

Choices

Choice (4) Response

a.

Active non-metals have positive reduction potentials

b.

Metals above hydrogen liberate hydrogen from acids

c.

Active metals have negative reduction potentials

d.

Metals below hydrogen liberate hydrogen from acids