Aromatic Hydrocarbons

Question 1

Benzene was discovered by Micheal Faraday in 1825 in?

Answer 1

Gas released by destructive distillation of vegetable oil

Question 2

Hoffman discovered benzene, 20 years after Faraday, in which compound?

Answer 2

Coal tar

Question 3

C-C bond length in benzene is?

Answer 3

1.39 A

Question 4

C-H bond length in benzene is?

Answer 4

1.09A

Question 5

Reagent used in halogenation of benzene is?

Answer 5

FeX3

Question 6

Reagent used in Friedel Craft reactions is?

Answer 6

AlCl3

Question 7

Temperature required for sulphonation of benzene with H2SO4 is?

Answer 7

80C

Question 8

Temperature required for nitration of benzene is?

Answer 8

50 to 55C

Question 9

Temperature required for catalytic oxidation of benzene with V²O⁵ is?

Answer 9

450 C

Question 10

Wurtz Frittig reactions take place in the presence of?

Answer 10

Ether and 2Na

Question 11

Temperature needed for aromatization of acetylene to benzene in Cu tube is?

Answer 11

300 C

Question 12

Temperature required for aromatization of alkanes is?

Answer 12

500 C

Question 13

Conversion of sodium benzoate to benzene by reaction with NaOH takes place is presence of?

Answer 13

CaO

Question 14

Examples of meta directors?

Answer 14

COH, COR, CN, NO2