Easy MCQ +4 / -1 PYQ · JEE Mains 2022

Which one of the following compounds is used as a chemical in certain type of fire extinguishers?

  1. A Baking soda Correct answer
  2. B Soda ash
  3. C Washing soda
  4. D Caustic soda

Solution

Baking soda $\left(\mathrm{NaHCO}_{3}\right)$ is used in certain type of fire extinguishers because it decomposes at high temperature to produce $\mathrm{CO}_{2}$ which extinguishes fire<br/><br/> $$ 2 \mathrm{NaHCO}_{3}(\mathrm{~s}) \stackrel{\Delta}{\longrightarrow} \mathrm{Na}_{2} \mathrm{CO}_{3}(\mathrm{~s})+\mathrm{H}_{2} \mathrm{O} \uparrow + \,\mathrm{CO}_{2} \uparrow $$

About this question

Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals

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