The major harmful gas emitted by automobile vehicles that causes air pollution is
(1) Carbon Monoxide
(2) Methane
(3) Carbon dioxide
(4) Ozone gas
Answer: (3) The main gas released from car exhausts — carbon dioxide – is one of the major greenhouse gasses. With large amounts of carbon dioxide being emitted into the atmosphere every day, the carbon cycle goes out of balance, and the carbon dioxide gas remains in the Earth’s atmosphere, trapping heat and contributing to global warming and climate change.
