PAH unit 1

The most Important Members of Polynuclear Aromatic Hydrocarbons are

• Naphthalene, anthracene, phenanthrene

• Benzene, Naphthalene, anthracene

• Butene, benzene, Naphthalene

• Benzene, Naphthol, Naphthalene,

Starting materials for anthracene preparation is

• Pthalimide

• Pthalic anhydride

• Succinic anhydride

• 1,4-dibromobutane

The most shorted bond length in Anthracene is

• C1-C2

• C2-C3

• C4-C5

• C6-C7

The most stable structure among the following option is

• Benzene

• Anthracene

• 9-Acetylanthracene

• Naphthalene

The most reactive position of Anthracene are

• 1,2

• 9,10

• 2,9

• 10,1

Naphthalene undergoes electrophilic substitution reactions at

• C2

• C1

• C4

• C5

Naphthalene undergoes sulfonation with conc H2SO4 at 165oC to form

• 1-naphthalenesulfonic

• 2-naphthalenesulfonic

• 3-naphthalenesulfonic

• 4-naphthalenesulfonic

1-Naphthol reacts with benzene diazonium chloride (BDC) to form

• 4-Phenylazo-1-naphthol

• 2-Phenylazo-1-naphthol

• 1-Phenylazo-1-naphthol

• 3-Phenylazo-1-naphthol

1-Naphthol reacts with benzene Nitros acid (HNO2) to form

• 2-Oxime of 1-2-Naphthaquinone

• 1-Oxime of 1-2-Naphthaquinone

• 3-Oxime of 1-2-Naphthaquinone

• 4-Oxime of 1-2-Naphthaquinone

2-Naphthol undergoes reaction with conc sulfuric acid (H2SO4) at 40oC to form

• 2-Naphthol-6-sulfonic acid

• 2-Naphthol-8-sulfonic acid

• 2-Naphthol-4-sulfonic acid

• 2-Naphthol-2-sulfonic acid