Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Recent questions in Chemistry
Questions
>>
CBSE XII
>>
Chemistry
Chemistry
States of Matter - Solid State
Solutions
Electrochemistry
Chemical Kinetics
Surface Chemistry
Isolation of Elements
p-Block Elements
d- and f-block elements
Coordinate Compounds
Haloalkanes and Haloarenes
Alcohols, Phenols and Ethers
Aldehydes, Ketones and Carboxylic Acids
Amines
Biomolecules
Polymers
Chemistry in everyday life
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
Which of the following conversions can be carried out by Clemmensen Reduction ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
Treatment of compound $Ph-O-C-Ph$ with $NaOH$ solution yields
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 9, 2015
by
meena.p
1
answer
In clemmensen Reduction carbonyl compound is treated with ____________
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 8, 2015
by
meena.p
1
answer
Which of the following compounds will give butanone on oxidation with alkaline $KMO_4$ Solution ?
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 8, 2015
by
meena.p
1
answer
Which is the most suitable reagent for the following conversion ? $CH_3-CH=CH-CH_2-C-CH_3 \to CH_3-CH =CH-CH_2-c -OH$
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 8, 2015
by
meena.p
1
answer
Compounds A and C in the following reaction are ___________ $CH_3CHO \quad \underrightarrow {CH_3MgBr} \quad (A) \quad \underrightarrow {H_2SO_4} \quad (B) \quad \underrightarrow {Hydroboration } \quad (C)$
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 8, 2015
by
meena.p
1
answer
$CH_3-C = CH \quad \underrightarrow {40\%H_2SO_4} \quad A \quad \underrightarrow {Isomersation} CH_3-C -CH_3$ Structure of A anf type of isomerisum in the above reaction are respectively
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 8, 2015
by
meena.p
1
answer
The reagent which does not react with both, acetone and benzaldehyde
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 8, 2015
by
meena.p
1
answer
Function group of aldehyde is
cbse
class12
chemistry
ch-12
aldehydes-ketones-and-carboxylic-acids
asked
Dec 8, 2015
by
meena.p
1
answer
In the following sequence of reaction $CH_3CH_2OH \quad \underrightarrow {P+I_2} \quad A \quad \underrightarrow {Mg} \quad B \quad \underrightarrow {HCHO} \quad C \quad \underrightarrow {H_2O} D$ the compound D is :
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 8, 2015
by
meena.p
1
answer
In the reaction sequence : $CaC_2 \quad \underrightarrow {H_2O} \quad A \quad \underrightarrow {dil.H_2SO_4} \quad B \quad \underrightarrow {H_2/Ni}\quad C$, the term C is
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 8, 2015
by
meena.p
1
answer
In the following sequence of reactions $CH_3-Br \quad$$ \underrightarrow {KCN} A\quad \underrightarrow{H_3 O} \quad B \underrightarrow{LiAlH_4} \quad C$
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 8, 2015
by
meena.p
1
answer
But-1-ene $\to$ ? the product in the above reaction is ?
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 8, 2015
by
meena.p
1
answer
End product of the following reaction is $CH_3CH_2COOH \to alcoholic KOH$
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 8, 2015
by
meena.p
1
answer
Alkyl Fluorides are synthesised by heating an alkyl chloride / bromide in presence of - or -
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 8, 2015
by
meena.p
1
answer
Alkyl halides are prepared from alcohols by treating with
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 8, 2015
by
meena.p
1
answer
Which of the following are secondary bromides ?
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 7, 2015
by
meena.p
1
answer
Which of the following compounds are g.m dihalide ?
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 7, 2015
by
meena.p
1
answer
Reaction of $C_6H_5CH_2Br$ with aqueous sodium hydroxide follows _____________
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 7, 2015
by
meena.p
1
answer
The position of Br in the compound in $CH_3CH = CHC(Br)(CH_3)_2$ can be classofied
cbse
class12
chemistry
ch-11
alcohols-phenols-and-ethers
asked
Dec 7, 2015
by
meena.p
1
answer
Page:
« prev
1
...
15
16
17
18
19
20
21
...
33
next »
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...