Heterocyclic compounds furan, pyrrole, thiophene.

Furan, pyrrole & thiophene undergoes electrophilic substitution at ........ position

• 1

• 3

• 2

• 4

Furan on Reaction with CHCl3/KOH gives

• 2 Acetyl furan

• 3 acetyl furan

• Furfural

• 2 chloro furan

Thiophene can not be prepared from

• Acetylene

• n-Butane

• Ethylene

• Sodium Succinate

Molecular formula of furan is

• C5H4O

• C4H4O

• C4H5O

• C5H5O

Molecular formula of pyrrole is

• C4H4S

• C4H4N

• C5H5S

• C5H5N

Reaction of thiophene with HNO3/Acetic unhydride gives

• 3-Nitro thiophene

• 2-Nitro thiophene

• 1-Nitro thiophene

• 4-Nitro Thiophene

Reaction of furan with acetyl chloride in presence of AlCl3 gives

• Furfural

• 2 acetyl furan

• 3 acetyl furan

• 2 benzoyl furan

Reaction of pyrrole with conc.H2So4 undergoes Sulphonation gives

• 2 sulpho pyrrole

• 2 pyrrole sulphonic acid

• 3 sulpho pyrrole

• 3 pyrrole sulphonic acid

Reaction of Acetylene with ammonia in Red hot tube gives

• Pyridine

• Thiophene

• Pyrrole

• Furan

Furan on hydrogenation gives

• Tetrahydrofuran

• Piperidine

• Pyrrolidene

• None