Chemistry Question Bank

Oxidation reactions can be carried out with chromic acid in aqueous acetone at 5–10°C.Which of following is incorrect in this respect (a) (b)

An organic compound X on treatment with pyridinium chloro chromate in dichloromethane gives compound Y. Compound Y reacts with I2 and alkali to form triiodomethane. The compound ‘X’ is

Aldehydes are the first oxidation product of

Ketones where R = R1 = alkyl group. It can be obtained in one step by

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?

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 ?

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