Identify the compound 'D' in the following series of reactions.

Benzene can be conveniently converted into n-propyl benzene by

• Friedel-Craft alkylation with n-propyl chloride

• Friedel-Craft acylation with propionyl chloride followed by Wolff-Kishner reduction

• Friedel-Craft acylation with propionyl chloride followed by catalytic hydrogenation

• Friedel-Craft acylation with propionyl chloride followed by reduction with LiAlH₄

At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O2 by volume for complete combustion. After combustion the gases occupy 330 mL. Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbon is:

• C₃H₈

• C₄H₈

• C₄H₁₂

• C₄H₁₂

The isomerisation of 1-butyne to 2-butyne can be achieved by treatment with

• hydrochloric acid

• ammoniacal silver nitrate

• ammoniacal cuprous chloride

• ethanolic potassium hydroxide

The reduction of benzenediazonium chloride to phenyl hydrazine can be accomplished by

• SnCl₂, HCl

• Na₂SO₃

• CH₃CH₂OH

• H₃PO₂

The major product(s) obtained form the following reaction of 1 mole of hexadeuteriobenzene is/are

The conversion of CH₃-CH₂-COOH to

accomplished by

• SOCl₂, LiAlH₄, ethylene glycol

• SOCl₂, KMnO₄, NH₂NH₂

• SnCl₂, HCl, Na₂SO₃

• HCl, SnCl₂, ethylene glycol

Ozonolysis of an alkene produces only one dicarbonyl compound. The structure of the alkene is

• H₃C - CH = CH - CH₃

• 

• 

• CH₃ - CH = CH - CH = CH₃

From the following compounds, choose the one which is not aromatic.

Identify X in the following sequence reactions