MCQOPTIONS
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| 1. |
In ordinary fire extinguishers, CO₂ is produced by the reaction of |
| A. | limestone and dilute sulfuric acid |
| B. | marble and dilute acid |
| C. | sodium bicarbonate and dilute sulfuric acid |
| D. | Acid of sodium carbonate and dilute salt |
| Answer» D. Acid of sodium carbonate and dilute salt | |