Aldehydes, Ketones and Carboxylic Acids

Reaction by which benzaldehyde cannot be prepared

The order of stability of the following tautomeric compounds is

Predict the products in the given reaction.

Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is

CH3CHO and C6H5CH2CHO can be distinguished chemically by

The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoroacetic acid (B), acetic acid (C) and formic acid (D) is

Consider the reaction :
RCHO + NH2NH2 \(\to\) RCH \(=\) N \(-\) NH2
What sort of reaction is it?

Consider the following reaction

The product A is

Which of the following compounds will give a yellow precipitate with iodine and alkali?

Clemmensen reduction of a ketone is carried out in the presence of which of the following?

Which one is a nucleophilic substitution reaction among the following ?

In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D.

An organic compound A on treatment with NH3 gives B, which on heating gives C. C when treated with Br2 in the presence of KOH produces ethyl amine. Compound A is

Match the compounds given in List-I with List-II and select the suitable option using the code given below.

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The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds:

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

Which of the following reactions will not result in the formation of carbon-carbon bonds?

Which one of the following compounds will be most readily dehydrated?

Propionic acid with Br2/P yields a dibromo product. Its structure would be

Trichloroacetaldehyde, CCl3CHO reacts with chlorobenzene in presence of sulphuric acid and produces

Acetophenone when reacted with a base, C2H5ONa,   yields a stable compound which has the structure

The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of

A strong base can abstract an \(\alpha\)-hydrogen from

Which of the following represents the correct order of the acidity in the given compounds ?

Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. HCl is called

Consider the following compounds

The correct decreasing order of their reactivity towards hydrolysis is

Which one of the following on treatment with 50% aqueous sodium hydroxide yields the corresponding alcohol and acid?

The product formed in Aldol condensation is

Nucleophilic addition reaction will be most favoured in

Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields

In a set of reactions propionic acid yielded a compound D.

The structure of D would be

A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of \(\alpha\)-hydrixy acid. The carbonyl compound is

In a set of reactions acetic acid yielded a product D.

The structure of D would be

The major organic product formed from the following reaction :

is

The \(-\) OH group of an alcohol or the \(-\) COOH group of a carboxylic acid can be replaced by \(-\) Cl using

Which one of the following can be oxidised to the corresponding carbonyl compound?

In this reaction :
CH3CHO + HCN \(\to\) CH3CH(OH)CN
           \(\buildrel {HOH} \over \longrightarrow\) CH3CH(OH)COOH
an asymmetric centre is generated. The acid obtained would be

In a set of the given reactions, acetic acid yielded a product C.

Product \(C\) would be

\(A\) and \(B\) in the following reactions are :

When \(m\)-chlorobenzaldehyde is treated with 50% KOH solution, the product(s) obtained is (are)

In the following reaction product \(P\) is

In the above reaction product P is

are

Which alkene on ozonolysis gives CH3CH2CHO and CH3COCH3?

Which of the following is incorrect?

Which of the following give positive Fehling solution test?

Benzoic acid may be converted into ethyl benzoate
by reaction with :

Reduction by LiAlH4 of hydrolysed product of an ester gives

First product of the reaction between RCHO and NH2NH2 is

Polarisation in acrolein can be described as