Home/Aldehyde and ketones
oxidation reduction Reactions of carbonyls
Question#1
The reagent with which both aldehyde and acetone react easily is[CPMT 1973, 74
Question#2
Which one of the following on oxidation will not give a carboxylic acid with the same number of carbon atoms [CBSE PMT 1992; MP PET 1996]
Question#3
Reduction of an aldehyde produces [MP PMT 1994; MP PET 2001]
\( ald \rightarrow 1^o-alcohol \)
Question#4
Reduction of Aldehydes and Ketones to hydrocarbon take place in the presence of [CPMT 2003]
Question#5
Methyl phenyl ketone can be converted into ethyl benzene in one step by using NUMS2016
Question#6
Butanone on oxidation with K2Cr2O7/H2SO4 forms NUMS2020
Question#7
Why it is necessary to distilled aldehyde from oxidation of primary alcohol through acidified per dichromate (VI) solution or acidified sodium dichromate (VI) solution MDCAT2018
\( 1^oAlcohol \xrightarrow{K2Cr2O7} \ Aldehyde \ \xrightarrow{K2Cr2O7 or KMnO4} Carboxylic \ acid \)
Question#8
Which regent is used for the conversion of ketone to sec. alcohols MDCAT2017
\(Ketone \xrightarrow[H]{Reduction} Sec. \ alcohol \)
\(Aldehyde \xrightarrow[H]{Reduction} Primary \ alcohol \)
LiAlH4 | NaBH4 | Raney Ni | Pd/C | |
Aldehyde | Yes | Yes | Yes | Yes |
ketone | Yes | Yes | Yes | Yes |
Acid Chloride | Yes | Yes | X | X |
Ester | Yes | X | X | X |
Carboxylic acid | Yes | X | X | X |
Question#9
2-propnanal on oxidation gives _______________ MDCAT2017
\( 1^oAlcohol \xrightarrow{K2Cr2O7} \ Aldehyde \ \xrightarrow{K2Cr2O7 or KMnO4} Carboxylic \ acid \)
\( 2^oAlcohol \xrightarrow{K2Cr2O7} \ Ketone \ \xrightarrow{K2Cr2O7/H+ or KMnO4/H+} Carboxylic \ acid \)
Question#10
The the reaction, ''?'' represents which of the following product: MDCAT2017Â
\( Primary \ alcohol + [O] \xrightarrow[H2SO4]{K2Cr2O7} \Â ? \Â \xrightarrow{[O]} Carboxylic \ acid \)Â Â
\( 1^oAlcohol \xrightarrow{K2Cr2O7} \ Aldehyde \ \xrightarrow{K2Cr2O7 or KMnO4} Carboxylic \ acid \)
\( 2^oAlcohol \xrightarrow{K2Cr2O7} \ Ketone \ \xrightarrow{K2Cr2O7/H+ or KMnO4/H+} Carboxylic \ acid \)
Question#11
Secondary alcohol is the product of reduction of which carbonyl compound ? MDCAT2020
\( 1^oAlcohol \xrightarrow{K2Cr2O7} \ Aldehyde \ \xrightarrow{K2Cr2O7 or KMnO4} Carboxylic \ acid \)
\( 2^oAlcohol \xrightarrow{K2Cr2O7} \ Ketone \ \xrightarrow{K2Cr2O7/H+ or KMnO4/H+} Carboxylic \ acid \)