1.

A certain metal M is used to prepare an antacid, which is used as a medicine in acidity. This metal accidently catches fire which can not be put out by using \[C{{O}_{2}}\] based extinguishers. The metal M is [BHU 2002]

A. \[Ca\]
B. C
C. Mg
D. All of these
Answer» D. All of these


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