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Sulphurous acid turns ⋯⋯ (A) blue litmus into red (B) red litmus into blue (C) no change to any of the litmus paper (D) can't say

Sulphurous acid turns ⋯⋯
(A) blue litmus into red
(B) red litmus into blue
(C) no change to any of the litmus paper
(D) can't say

Grade:12th pass

2 Answers

Pawan Prajapati
askIITians Faculty 60787 Points
2 years ago
Our expert is working on this Class X Science answer. We will update the answer very soon.
Yash Patari
askIITians Faculty 2123 Points
2 years ago
Dear student
Sulphurous acid (H2SO3) is an acid. The main use of litmus is to test whether a solution is acidic or basic. Blue litmus paper turns red under acidic conditions. So sulphurous acid turns blue litmus into the red.

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