Question

Assertion: Through the use of catalytic converters, unburnt hydrocarbons is changed into carbon monoxide which in turn is changed into nitrogen oxides and water.
Reason: Motor vehicles equipped with catalytic converters should use leaded petrol to protect the catalyst from degradation.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect

Answer 1

Hint: As the fumes goes through the exhaust system, unburnt hydrocarbons are changed over into carbon dioxide and water, and carbon monoxide and nitric oxide are changed to carbon dioxide and nitrogen gas, separately.

Complete answer:
An exhaust system is a vehicle emanation control gadget that changes over poisonous toxins of the fumes gas into less harmful contaminants by catalyzing a redox response. Exhaust systems, having costly metals specifically platinum-palladium and rhodium as the impetuses, are fitted into vehicles for lessening emanation of harmful gases. Rhodium is utilized as a decrease in impetus, palladium is utilized as an oxidation impetus, and platinum is utilized both for oxidation and decrease.
Engine vehicles furnished with exhaust systems should utilize unleaded petroleum since lead in the petroleum inactivates the impetus. An exhaust system is a fumes outflow control gadget that lessens poisonous gases and toxins in fumes gas from an inside ignition motor into less-harmful contaminants by catalyzing a redox response (an oxidation and a decreased response). Exhaust systems are normally utilized with inward ignition motors filled by one or the other fuel or diesel—including lean-consume motors just as lamp oil warmers and ovens. In 1981, two-way exhaust systems were delivered out of date by "three-way" converters that additionally decrease oxides of nitrogen (${NO_x}$); in any case, two-way converters are as yet utilized for lean-consume motors.

So the correct answer is Both Assertion and Reason is incorrect.

Note:
The primary far and wide presentation of exhaust systems was in the United States car market. To consent to the U.S. Ecological Protection Agency's stricter guideline of fumes discharges, most gas controlled vehicles beginning with the 1975 model year are outfitted with synergist converters. These "two-way" converters join oxygen with carbon monoxide (CO) and unburned hydrocarbons (CnHn) to deliver carbon dioxide (${CO_2}$) and water (${H_2}$O).