The two major components of air are:
Oxygen and Hydrogen
Nitrogen and hydrogen
Oxygen and Carbon dioxide
Nitrogen and Oxygen
Nitrogen and Oxygen are the two major components of air.
Air is a mixture of only three gasses nitrogen, oxygen and carbon dioxide.
Two gases found dissolved in natural water are
(a) oxygen and carbon dioxide
(b) hydrogen and oxygen
(c) sulphur dioxide and hydrogen
(d) chlorine and ammonia
One of the following is an endothermic reaction. This is :
(a) combination of carbon and oxygen to form carbon monoxide
(b) combination of nitrogen and oxygen to form nitrogen monoxide
(c) combination of glucose and oxygen to form carbon dioxide and water
(d) combination of zinc and hydrochloric acid to form zinc chloride and hydrogen