What are the values shown by his father?

Ramesh visited Delhi with his parents, where he saw buses and vehicles mostly running on CNG instead of petrol. He was surprised and wanted to know the reason behind it. His father explained its reason.

  1. According to you what would his father explain?
  2. Name two gases which are emitted by burning of petroleum.
  3. What are the values shown by his father?
  1. His father explained that burning of petroleum causes more pollution than CNG (Compressed Natural Gas). Therefore to control the level of air pollution, CNG is used as a fuel instead of petrol.
  2. Oxides of nitrogen and sulphur, i.e. NO2 and SO2 gases are released into the atmosphere after burning of petroleum.
  3. His father is very intelligent and aware about air pollution.