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NEET levelSingle correct optionDifficulty 1 of 3ev010

Cars fitted with catalytic converters must use unleaded petrol because lead compounds

Aconvert $SO X_{2}$ into $SO X_{3}$
Breact with $N X_{2}$ to form $NO$
Care oxidised to $CO X_{2}$ in the converter
Dpoison the catalyst and make it inactive

Answer: D

Lead from leaded petrol deposits on the noble metal surface and blocks the active sites, so the converter stops working. Hence unleaded petrol is used.

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