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Recent questions in Aldehydes, Ketones and Carboxylic Acids
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CBSE XII
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Chemistry
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Aldehydes, Ketones and Carboxylic Acids
Which of the following compound gives cannizzaro's reaction ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
In wolf-kishner reduction, the carbonyl group of aldehydes and ketones is conusted into
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
When ethanal is treated with Fehling's solution it gives a precipitate of
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
The general formula $C_nH_{2n}O_2$ could be for open chain
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Consider the acidity of the carboxylic acids
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Acid catalysed hydration of allcenes except ethene leads to the formation of
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
The increasing order of the rate of HCN addition to compounds A-n is $(A)HCHU \qquad (B) CH_2COCH_3 \qquad (C) PhCOcH_3 \qquad (D) PhCOPb$
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
The compound formed as a result of oxidation of ethyl benzene by $KMnO_4$ is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Silver mirror test is given by which one of the following compounds ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
The strongest acid amongest the following compounds is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
In a set of reaction propipnic acid yielded a compound D $CH_3CH_2COOH \underrightarrow{SOCl_2} \quad B \quad \underrightarrow{NH_3} \quad C \quad \underrightarrow{KOH} D$ The structure of D would be :
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Reduction by $LiAlH_4$ of hydrolyzed product of an ester gives
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Ethyl benzoate can be prepared from benzoic acid by using
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Which one of the following compounds will react with $NaHCO_3$ solution to give sodium salt and carbon dioxide ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Which one of the following esters cannot undergo claisen self- condensation ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Which of the following compound gives benzoic acid on hydrolysis?
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
An acyl halide is formed when $Pcl_5$ reacts with an
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
$(CH_3)_2C =CHCOCH_3$ can be oxidized to $(CH_3)_2CX =CHCOOH$ by
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
The compound formed when malonic acid is heated with urea is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Which of the following compounds will give a yellow precipate with iodine and alkali ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Consider the reaction $RCHO+NH_2NH_2 \to RCH = NH_2$ What sort of reaction is it ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
$CH_3CHO$ and $C_6H_5CH_2$ can be distinguished chemically by
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 10, 2015
by
meena.p
1
answer
Clemmen reduction of a ketone is carried out in the presence of which of the following ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
The product formed in Aldol condonsation is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Which one of the following on treatment with $50\%$ aqueous sodium hydroxide yields the corresponding alcohol and acid ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Reduction of aldehydes and ketones into hydro carbons using zinc amalgam and conc. Hcl is called
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Nuclephilic addition reaction will be most favoured in
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Which one of the following can be oxidised to the corresponding carbonyl compound?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
$CH_2-C-CH_3$ and $CH_2=C-CH_3$ are:
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Which of the following give positive febling solution test?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Which alkene on ozonolysis gives $CH_3 CH_2CHO$ and $CH_3COCH_3$?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
First product of the reaction between RCHO and $NH_2NH_2$ is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Aldol condensation will not take place in
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
In the reaction $CH_3CN+2H \to X \ \underrightarrow {boiling H_2O} \qquad y $ the term Y is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Phenyl methanol can be prepared by reducing the henzaldehyde with
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
The oxidation of toulene to benzaldehyde by cromul chloride is called
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Aldol condensation will not take place in
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
In the reaction $CH_3CHO+HCN \to CH_3CH(OH)CH_2$, a chiral center is produced . this product is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Which of the following compound will undergo self aldol condensation in the presence of cold dilute alkali ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Which of the following compounds will give positive test with tollen's reagent ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Sodium formate on heating yields
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Acetaldehyde reacts with
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
The reagent(s) which can be used to distinguish acetophenone from benzophenone is (are)
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
$CH_2-O-CH_2-O-CH_2-0$ obtained when a carbonyl compound is allowed to stand . It is a white solid . The polymer is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Among the following the strongest acid is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Formation is an aqueous solution of
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
If formaldehyde and $KOH$ are heated , then we get,
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Benzophenone can be obtained by __________
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Through which of the following reactions number of carbon atoms can be increased in the chain?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
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