Fire extinguishers contain H2SO4 and

Fire extinguishers contain $H_{2} {SO}_{4}$ and

A
${CaCO}_{3}$
B
${Na}_{2} {CO}_{3}$
C
${NaHCO}_{3}$
D
${NaHCO}_{3} and {Na}_{2} {CO}_{3}$

Solution:

${NaHCO}_{3} and {Na}_{2} {CO}_{3}$ decomposes to give ${CO}_{2}$ which extinguish fire.

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