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Corrosion

Silver jewell...

Question

Silver jewellery tarnish in the presence of moisture and:

A

Sulphur compounds

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B

Nitrogen

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C

Oxygen

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D

Carbon dioxide

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Solution

The correct option is A Sulphur compounds
Tarnish of Silver jewellery is result of chemical reaction of Silver with Sulphur containing substances in the air forming Silver sulphide which is black in colour.

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Q. Sulphur dioxide acts as bleaching agent in presence of moisture,it is due to liberation of:

Q. Assertion :Gold and silver are used to make jewellery. Reason: Gold and silver are highly inactive metals. Therefore, they do not undergo corrosion due to attack by moisture and atmospheric gases.

Q. The presence of ______ in air tarnishes the surface of silver black.

Q. Nitrogen dioxide dissolves in atmospheric moisture or rainwater in the presence of oxygen to form _____.

State whether the given statement is true or false:

Silver jewellery items tarnish slowly in air due to their reaction with

H_{2} S

.

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