19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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)
Which of the following yield 2 moles of formaldehyde on ozonolysis?
On reductive ozonolysis yields
Which of the following compound will yield 2,5- dimethylhexan-1,6-dial upon ozonolysis?
the compound (X) is
major product is (a) (b) (c) (d)
The smallest ketone and its next homologue are reacted with NH2OH to form oxime
Which one of the following will most readily be dehydrated in acidic condition ? (a) (b) (c) (d)
Which of the following compound gives a ketone with Grignard reagent:
When a nucleophile encounters a ketone, the site of attack is
The major product obtained in the following reaction is : (a) (b) (c) (d)
What reagent is used in the Rosenmund’s reduction ?
Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on further treatment with aqueous KOH yields compound F. Compound F is (a) (b) (c) (d)
The end product in the following sequence of reaction is
The IUPAC name of the following structure is