(D) The process of depositing a uniform thin layer of silver on a clean glass surface is known as silvering of mirrors. This layer is protected by a c

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Ammoniacal $AgNO_3 +$ Red lead $+ HCHO$

(D) The process of depositing a uniform thin layer of silver on a clean glass surface is known as silvering of mirrors. This layer is protected by a coating of a mixture of red lead and turpentine.The chemical reaction involved is:$2AgNO_3 + 2NH_4OH \rightarrow Ag_2O + 2NH_4NO_3 + H_2O$$Ag_2O + HCHO \rightarrow 2Ag + HCOOH$Here,$HCHO$ (formaldehyde) acts as a reducing agent to reduce silver ions to metallic silver.

Class 12 Chemistry 8-1.Aldehydes and Ketones Properties

Medium

What is used in the silvering of mirrors?

A
Red lead
B
Ammoniacal silver nitrate
C
Ammoniacal $AgNO_3 +$ Red lead
D
Ammoniacal $AgNO_3 +$ Red lead $+ HCHO$

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8-1.Aldehydes and Ketones

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Properties

Which of the following reagent$(s)$ is/are used for the given conversion?

DifficultJEE MAIN 2013

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Identify the name of the reaction when an aldehyde or ketone reacts with $Zn-Hg / \text{conc. } HCl$ to give an alkane.

EasyMHT CET 2024

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The reaction of butanal with $n$-propylmagnesium bromide gives a

EasyKVPY 2009

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Match the compounds in Column-$I$ with their respective intermolecular attraction forces in Column-$II$.

Column-$I$ (Compound) Column-$II$ (Attraction Forces)

$A$. Aldehyde $i$. Intermolecular hydrogen bond formed in $ROH$ between $O^{\delta -}$ of one molecule and $H^{\delta +}$ of another molecule.

$B$. Ketone $ii$. Dipole-dipole forces between $C^{\delta +}$ of one molecule and $O^{\delta -}$ of another molecule.

$C$. Alcohol $iii$. van der Waals forces

$D$. Alkane $iv$. Ionic forces

Column-$I$ (Compound)	Column-$II$ (Attraction Forces)
$A$. Aldehyde	$i$. Intermolecular hydrogen bond formed in $ROH$ between $O^{\delta -}$ of one molecule and $H^{\delta +}$ of another molecule.
$B$. Ketone	$ii$. Dipole-dipole forces between $C^{\delta +}$ of one molecule and $O^{\delta -}$ of another molecule.
$C$. Alcohol	$iii$. van der Waals forces
$D$. Alkane	$iv$. Ionic forces