Question # 1

Which one of the following is not an electrolyte?

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sugar solution

sulphuric acid solution

Lime solution

Sodium chloride solution

Br2 + H2S __ 2HBr + S, which one is oxidizing agent:

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H2S

Br2

S

2HBr

____________ is an irreversible cell.

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Dry cell

Chargeable cell

Zn cell

None of these

Cu + 2AgNO3 -------> Cu(NO3) +2Ag. In this reaction reducing agent is:

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Cu

AgNO3

Cu(NO3)2

Ag

Which one of the following is not an electrolytic cell:

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Down cell

Galvanic cell

Nelson' cell

Both a and c

Copper extracted from its ore is ____________ % pure.

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98%

99%

96%

Nil

Which one of the following is a galvanic cell?

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Daniel cell

Nelson's cell

Down's cell

Both B and C

Metals are covered by using.

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Baeyer's test

Bohr's

Electrolysis

None

It is a good reducing agent

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Fe

H

C

O

Gain of electrons in a reaction is called ____________reaction.

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Oxidation

Reduction

Both

Nil

Brine is an aqueous solution of

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NaCI

NaOH

AgNO3

CaO

Films are coated by special chemical known as ____________ detectors.

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Photographic

Image

Nil

Both

The metallic plates through which electrons enters and leaves electrolytes:

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Wires

Electrodes

Both

Nil

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