Question:-
Which one of the following cannot be controlled by a three-way catalytic converter?
Option (A)
HC emission
Option (B)
CO emission
Option(C)
NOx emission
Option(D)
SPM emission
Correct Option:
(D)
Question Solution:
3-way catalytic convertor
Palladium ® CO
Rhodium ® NOX
Platinum ® HC
3-way catalytic converter consist platinum (Pt), palladium (Pd) and Rhodium (Rb). Rhodium first convert NOX into N2 and O2. Platinum convert hydrocarbon (HC) into H2O and CO2. Palladium convert CO (carbon mono-oxide) into CO2. It has a honey comb structure.
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