In contact process, arsenic impurity has to be removed before proceeding.(a) True(b) FalseThis question was addressed to me during an interview for a job.My doubt stems from P-Block Elements topic in portion P-Block Elements of Chemistry – Class 12

In contact process, arsenic impurity has to be removed before proceedi

1.	In contact process, arsenic impurity has to be removed before proceeding.(a) True(b) FalseThis question was addressed to me during an interview for a job.My doubt stems from P-Block Elements topic in portion P-Block Elements of Chemistry – Class 12
Answer» The correct option is (a) True Best explanation: Sulphur dioxide is purified by removing DUST and arsenic impurities. Arsenic is a catalyst POISON for vanadium PENTOXIDE catalyst. Hence, it has to be REMOVED completely before entering into the catalytic CHAMBER.

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