Chlorine is used for water purification. It has the ability to kill germs.
Oxygen, hydrogen and nitrogen
Carbon, hydrogen and oxygen
Carbon, hydrogen and nitrogen
Carbon, hydrogen and chlorine
Sugar is made of three non-metals - Carbon, hydrogen and oxygen.
Question 15 Give the formulae of the compounds formed from the following sets of elements
(a) Calcium and fluorine (b) Hydrogen and sulphur (c) Nitrogen and hydrogen (d) Carbon and chlorine (e) Sodium and oxygen (f) Carbon and oxygen
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
Protein is mainly formed by carbon, hydrogen, nitrogen and oxygen.