19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Aldehydes and ketones can be reduced to corresponding hydrocarbons by
Clemensen’s reduction of ketones is carried out in
Clemmensen's reduction will convert cyclohexanone into:
Clemmensen reduction involves > C = O to > CH2 in presence of
Which of the following carbonyl oxygen will form strongest hydrogen bond with 퐻2푂 molecule? (a) (b) (c) (d)
Product may be
Which of the aldehyde is most reactive towards nucleophilic addition reaction ?
Nucleophilic addition reaction will be most favoured in
The increasing order of the rate of HCN addition to compounds A-D is
A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of a α-hydroxy acid. The carbonyl compound is
Arrange the following compounds in increasing order of their reactivity in nucleophilic addition reactions. Ethanal (I), Propanal (II), Propanone (III), Butanone (IV)
The reagent used in Gattermann Koch aldehyde synthesis is
Reduction of acetonitrile in presence of SnCl2/HCl, followed by hydrolysis gives :
What reagent is used in the Rosenmund reduction?
Catalyst used in Rosenmund reduction is
In the following reaction, product P is
Which of the following forms an enol to the greatest extent ? (a) (b) (c) (d)
Which of the compound shown is (are) correctly named as pentane derivates, either as pentanals or pentanones ?
When enolate A is compared with enolate B (A) (B) which of the following statements is true ?
Which of the following is paradehyde?
Ethanedial has which functional group ?
The structure would be best classified as a(n)
Acetals are
A strong base can abstract an alpha-hydrogen from
The formula of chloral is (a)퐶퐻3퐶퐻= 푁퐻퐶6퐻5