Silver cutlery tarnishes black by food rich in ___________.

Sulphur

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Carbohydrates

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Proteins

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Fats

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Solution

The correct option is A Sulphur
Silver cutlery tarnishes black by food rich in sulphur. The reaction of silver with hydrogen sulfide gives black silver sulphide.
$2 A g + H_{2} S \to A g_{2} S + H_{2} ↑$

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