19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Isopropyl alcohol on oxidation forms:
Aldehydes are first oxidation products of:
An aldehyde on oxidation gives
The reaction of acetaldehyde with conc. KMnO4 gives
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
Arrange the following compounds in decreasing order of their boiling points. CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3
Which of the following is the industrial method of preparation of acetaldehyde?
Complete the reaction: Ph −CH = CH −CHO PhMgBr/H3O+ → Product
A and B are respectively.
Which of the following on heating with aqueous KOH, produces acetaldehyde ?
When but-2-yne is treated dil.H2SO4/HgSO4 the product formed is :
Which of the following gases when passed through warm dilute solution of H2SO4 in presence of HgSO4 gives acetaldehyde?
Which of the compounds with molecular formula C5H10 yields acetone on ozonolysis?
Which compound would give 5 – keto – 2 – methyl hexanal upon ozonolysis? (a) (b) (c) (d)