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Question

It is advisable not to cover egg yolk or mustard with silver cutlery because:


Your Answer
A
Silver reacts with the water of egg yolk to form AgOH
Correct Answer
B
Silver reacts with the sulphur of the egg yolk forming black Ag2S
Your Answer
C
Silver reacts with the egg yolk forming Ag2SO4 which is a poisonous substance
Your Answer
D
Silver attracts UV light of the atmosphere, thereby spoiling the food

Solution

The correct option is C Silver reacts with the sulphur of the egg yolk forming black Ag2S
Both egg yolk and mustard contain a large quantity of sulphur, which on reaction with Ag forms Ag2S.
2 Ag+SAg2S (black colour) 

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