ICSE BoardEnglish MediumSTD 10ChemistrySulphuric Acid1 Mark
MCQ
Sulphuric acid is found as _______ in combined state.
A
Gypsum
B
Barytes
C
Kieserite
D
All of these
✓
Answer
D. All of these Explanation : Sulphuric acid occurs in two states in nature: (a) In the free state, it is found in mineral springs, where it is formed by the action of water on certain sulphides. (b) In the combined state, it is found in the form of metallic sulphates such as gypsum $CaSO _4 \cdot 2 H _2 O$, barytes $BaSO _4$, kieserite $MgSO _4 \cdot 2 H _2 O$.
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