When carbon reacts reacts with oxygen, carbon dioxide gas is produced.
a) Which is the gas obtained if increasesd the amount of carbon or decreasing the amount of oxygen in this reaction.
b) The dangerous to inhale gas is thus formed. Give reason.
c) Mention one use of this gas.

Explanation

a) Carbon monoxide (CO)
b) When CO reacts with haemoglobin in the blood, it forms carboxy-haemoglobin. As a result the oxygen carrrying capacity of blood decreases, leading to even death.
c) i) As a gaseous fuel
ii) Used as a reducing agent in metallurgy