Question

Which process is used for large scale manufacturing of sulphuric acid?

(a) Haber’s process

(b) Ostwald’s process

(c) Smith’s process

(d) Contact process

The question was asked during an internship interview.

This key question is from P-Block Elements in portion P-Block Elements of Chemistry – Class 12

Answer 1

Right choice is (d) Contact process

To explain: These days sulphuric acid is mostly prepared by the Contact process. The acid produced by this method is free from arsenic impurities and hence can be safely used for the preparation of edible products.