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In the manufacture of sulphuric acid by contact process, Tyndall box is used to

In the manufacture of sulphuric acid by contact process, Tyndall box is used to

Options

(a) filter dust particles
(b) remove impurities
(c) convert SO₂ to SO₃
(d) test the presence of dust particles

Correct Answer:

test the presence of dust particles

Explanation:

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