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(A) Catalytic converters are used in automobiles to reduce the emission of poisonous gases like carbon monoxide and nitrogen oxides.These converters c

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Selenium

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(A) Catalytic converters are used in automobiles to reduce the emission of poisonous gases like carbon monoxide and nitrogen oxides.These converters contain expensive metals acting as catalysts,specifically $Platinum$,$Palladium$,and $Rhodium$.As the exhaust passes through the catalytic converter,unburnt hydrocarbons are converted into carbon dioxide and water,carbon monoxide is converted into carbon dioxide,and nitric oxide is converted into nitrogen gas.$Selenium$ is not used as a catalyst in these converters.Therefore,the correct option is $A$.

Column-$I$	Column-$II$
$(1)$ Electrostatic precipitator	$(a)$ Removes gases like $SO_2$
$(2)$ Scrubber	$(b)$ Reduces automobile emission
$(3)$ Catalytic converter	$(c)$ Removes particulate matter

Catalytic converters,which have expensive metals as catalysts,are fitted into automobiles for reducing emission of poisonous gases. Which of the following is $NOT$ used in them?

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