Q: Chalk and marble are different forms of
(a)Calcium hydrogen carbonate
(b)Calcium carbonate
(c)Calcium acetate
(d)Sodium carbonate
Correct Answer: (b)
The correct answer is (c): कैल्शियम एल्युमिनेट. Subject: General Studies | Sub-topic: Miscellaneous Note: This answer was determined through AI-based research. Verify against the official answer key when available.