Multiple choice

Which carbohydrate is used in silvering of mirrors?

  1. Fructose

  2. Sucrose

  3. Glucose

  4. Starch
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A Correct answer
Explanation

Fructose is a reducing sugar that contains an aldehyde group which can reduce silver ions (Ag+) to metallic silver (Ag) in Tollens' reaction and similar silvering processes. This reduction property is exploited in the silvering of mirrors. Sucrose is a non-reducing sugar, glucose and starch are not typically used in this chemical process.

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