HARD
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The correct formula of the product of reaction between ϕCHO and propanoic anhydride in presence of sodium propionate is

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Important Questions on Aldehydes, Ketones and Carboxylic Acids

HARD
The test performed on compound x and their inferences are:
 
Test Inference
a 2, 4 - DNP test Coloured precipitate yellow
b Iodoform test Yellow precipitate
c Azo-dye test No dye formation

Compound x is:

HARD
Which of the following is not an intermediate in the acid catalysed reaction of benzaldehyde with two equivalent of methanol to give acetal?
MEDIUM
Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer?
HARD
Columns 1, 2 and 3 contain starting materials, reaction conditions and type of reactions respectively.
 
Column 1 Column 2 Column 3
(I) Toulene (i) NaOH/Br2 (P) Condensation
(II) Acetophenone (ii) Br2/hv (Q) Carboxylation
(III) Benzaldehyde (iii) CH3CO2O/CH3COOK (R) Substitution
(IV) Phenol (iv) NaOH/CO2 (S) Haloform
For the synthesis of benzoic acid the only correct combination is
EASY
Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:
EASY
Which of the following is most reactive towards addition reaction of hydrogen cyanide to form corresponding cynohydrin?
EASY

Which is the most suitable reagent for the following conversion?

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MEDIUM
The reagent(s) which can be used to distinguish acetophenone from benzophenone is/are
MEDIUM
Which is the main organic product obtained by the reaction of 2, 2, 2 trichloro ethanal with calcium hydroxide?
MEDIUM
In the following reaction
carbonyl compound +MeOHHClacetal

Rate of the reaction is the highest for:
MEDIUM
A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives
HARD

After completion of the reactions (I and II), the organic compound(s) in the reaction mixtures is(are):

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