Water can be synthesized by burning _________ in air.
Hydrogen
Carbon dioxide
Nitrogen
Oxygen
Water can be synthesized by burning hydrogen in air.
Reaction:
2H2 + O2 → 2H2O
[Hydrogen] [Oxygen] [Water]
Question 8 Which of the following raw material is available in the air for photosynthesis? (a) Oxygen (b) Carbon dioxide (c) Nitrogen (d) Hydrogen
Which of the following will be reduced in air in a city forest when a lot of dust and fly ash is emitted by a coal-based factory in the vicinity?
(a) nitrogen
(b) carbon dioxide
(c) oxygen
(d) water vapour
Air is a mixture of only three gasses nitrogen, oxygen and carbon dioxide.