Question

1. Combustion of carbon containing compounds with limited supply of oxygen
yields polycyclic aromatic hydrocarbons which are carcinogenic as well as
mutagenic. Some polycyclic aromatic hydrocarbons have been isolated from
tobacco smoke.
Answer the following qwestions
(0 Give examples of any two polycyclic aromatic hydrocarbons.
(1) A polycyclic aromatic hydrocarbon has molecular formula Ciche. Draw
the various possible resonating structure of this compound,
(it) Explain why tobacco smoking is injurious to health?
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Answer 1

Answer:

1)Naphthalene.

Biphenyl.

Fluorene.

Anthracene.

Phenanthrene.

Phenalene.

Tetracene.

2)Ciche?

3)Smoking can cause lung disease by damaging your airways and the small air sacs (alveoli) found in your lungs. Lung diseases caused by smoking include COPD, which includes emphysema and chronic bronchitis. Cigarette smoking causes most cases of lung cancer.