Observe the diagram of the catalytic converter and answer the questions which follow.
(a) Name any two metals used as catalyst in the catalytic converter.
(b) Name the gases released after passing the exhaust hydrocarbons through the catalytic converter.
(c) Which other poisonous gas is missing in the exhaust pollutant of an automobile in the above diagram?
(a) Platinum-palladium and rhodium.
(b) Carbon dioxide (CO2) and carbon monoxide (CO).
(c) Nitric oxide is a poisonous gas missing in the diagram.