1.

The addictive chemical present in tobacco isA. CaffeineB. nicotineC. catecholD. carbon monoxide.

Answer» Correct Answer - B
Nicotine is the major stimulatory component of tobacco products. It is highly poisonous as well as addictive chemical. Nicotine stimulates adrenal gland to release adrenaline and non-adrenaline into blood circulation increasing both blood pressure and heart beat rate. The increased blood pressure leads to increased risk of heart disease.


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