Which of the following is present in cigarette smoke?

The Correct answer is Nicotine.

Key Points

• Nicotine is a potent chemical found in cigarette smoke.
• It acts as a stimulant and is highly addictive, which is why people find it difficult to quit smoking.
• Nicotine affects the central nervous system by releasing neurotransmitters like dopamine, which gives a feeling of pleasure and satisfaction.
• It is also used in nicotine replacement therapies (NRTs) such as nicotine patches and gum to help people quit smoking.
• Chronic exposure to nicotine can lead to cardiovascular diseases, respiratory issues, and various types of cancers.

 Additional Information

• Methane
  • Methane is a colourless, odorless gas that is a major component of natural gas.
  • It is not typically associated with cigarette smoke but is a significant greenhouse gas contributing to global warming.
• Carbon dioxide
  • Carbon dioxide (CO₂) is a colourless gas produced by burning carbon and organic compounds and by respiration.
  • It is present in cigarette smoke but is not the primary harmful component.
• Ethanol
  • Ethanol is a type of alcohol used in alcoholic beverages and as a fuel additive.
  • It is not found in cigarette smoke but is often used in hand sanitisers and disinfectants.