The most efficient agent for the absorption of SO₃ is

The most efficient agent for the absorption of SO₃ is

Options

(a) 90% of H₂SO₄
(b) 80% of H₂SO₄
(c) 20% of oleum
(d) 98% H₂SO₄

Correct Answer:

98% H₂SO₄

Explanation:

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