19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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)
The general formula of both aldehydes and ketones is:
Aldehydic group can occur :
The formula of chloral is (a)퐶퐻3퐶퐻= 푁퐻퐶6퐻5
A strong base can abstract an alpha-hydrogen from
Formalin is an aqueous solution of :
Acetals are
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 structure would be best classified as a(n)
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 ?
Ethanedial has which functional group ?
Identify compound X in the following sequences of reactions : (NEET 2021) (a) (b) (c) (d)
Conc.NaOH O|| H C H CH CH O -> Find out the products of reaction (AIIMS 2019)
The IUPAC name of the compound (NEET 2017) is