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Silver mirror test is given by which one of the following compounds ?
(AIEEE 2011) 
  • a)
    Acetaldehyde
  • b)
    Acetone
  • c)
    Formaldehyde
  • d)
    Benzophenone
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Silver mirror test is given by which one of the following compounds ?(...
All aldehydes including reducing sugar (as glucose, fructose) give silver mirror test (with Tollen's reagent).

Thus, acetaldehyde and formaldehyde give silver mirror test.
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Most Upvoted Answer
Silver mirror test is given by which one of the following compounds ?(...
All aldehydes including reducing sugar (as glucose, fructose) give silver mirror test (with Tollen's reagent).

Thus, acetaldehyde and formaldehyde give silver mirror test.
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Community Answer
Silver mirror test is given by which one of the following compounds ?(...
The silver mirror test is a chemical test used to distinguish aldehydes from ketones. It is based on the reduction of silver ions to silver metal, which forms a silver mirror on the inner surface of a test tube or flask. The compound that gives a silver mirror test is acetaldehyde (option A).

Explanation:
- Aldehydes and ketones are two different types of carbonyl compounds. Aldehydes have a carbonyl group (C=O) at the end of a carbon chain, while ketones have a carbonyl group in the middle of a carbon chain.
- To perform the silver mirror test, a solution of Tollens' reagent is used. Tollens' reagent is a mixture of silver nitrate (AgNO3) and ammonia (NH3).
- When an aldehyde is added to Tollens' reagent and heated, the aldehyde is oxidized to a carboxylic acid, and the silver ions in the Tollens' reagent are reduced to silver metal. This reduction reaction forms a silver mirror on the inner surface of the test tube or flask.
- Acetaldehyde is an aldehyde and has the chemical formula CH3CHO. When acetaldehyde is added to Tollens' reagent and heated, it gives a positive silver mirror test, indicating the presence of an aldehyde group.
- Acetone, formaldehyde, and benzophenone are all ketones and do not give a positive silver mirror test. Ketones do not have a hydrogen atom attached to the carbonyl carbon, which is necessary for the reduction of silver ions to occur.
- Acetone has the chemical formula (CH3)2CO, formaldehyde has the chemical formula HCHO, and benzophenone has the chemical formula (C6H5)2CO. None of these compounds have a hydrogen atom attached directly to the carbonyl carbon, so they do not undergo the necessary oxidation-reduction reaction to give a silver mirror.

In conclusion, acetaldehyde (option A) is the compound that gives a positive silver mirror test, while acetone, formaldehyde, and benzophenone do not.
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Silver mirror test is given by which one of the following compounds ?(AIEEE 2011)a)Acetaldehydeb)Acetonec)Formaldehyded)BenzophenoneCorrect answer is option 'A'. Can you explain this answer?
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