A. 1
B. 2
C. 3
D. 4
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A. 1
B. 2
C. 3
D. 4
Answer: A. 1 The number of hydroxyl group present in Pyrosulphuric acid is 1 .
Answer: A. 1
The number of hydroxyl group present in Pyrosulphuric acid is 1 .
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