Q: In industrial towns, stones are preserved by the application of which solution? औद्योगिक नगरों में, पत्थरों को किस विलयन के अनुप्रयोग द्वारा संरक्षित किया जाता है?
A.
Baryta/बेरेटा
B.
CaCl₂
C.
H₂SO₄
D.
Caustic alkalis/कॉस्टिक क्षार
Correct Answer:
Option A -
Explanations:
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