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Unit#4: Electrochemistry

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1

In electrolysis of aqueous NaCl, hydrogen is released at:

2

Electrolysis of molten compounds is preferred because:

3

A dry cell is commonly used in:

4

Which of the following is an example of galvanic cell?

5

A redox reaction is a reaction in which:

6

A battery is made up of:

7

Which device directly converts chemical energy to electrical energy?

8

Which of the following is a secondary cell?

9

A metal higher in electrochemical series is:

10

Electrochemical series helps to predict:

11

Which substance acts as oxidizing agent in Daniell cell?

12

Electrolysis of molten sodium chloride produces:

13

A fuel cell produces electricity by:

14

Halide compounds are electrolyzed mainly to obtain:

15

A lead-acid battery is commonly used in:

16

Which ion migrates through the salt bridge?

17

The purpose of a salt bridge in a galvanic cell is to:

18

In a Daniell cell, zinc electrode acts as:

19

Hydrogen-oxygen fuel cell uses:

20

The electrode where reduction occurs is called:

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