Which of the following gases is used in cigarette lighters?
Q73. Consider the following statements about E-cigarettes.
1. E-cigarettes are handy battery-powered devices that emit doses of vaporized caffeine.
2. Unlike regular cigarette, e-cigarettes do not produce smoke but produces an aerosol which is inaccurately referred to as vapour.
3. Liquid solution used in E-cigarettes contains propylene glycol and glycerine.
Which of the above statement(s) is/are correct?
Why is cigarette smoking harmful and which gases are emitted ??
Which one of the following gases is used in electric bulbs?