Question

A substance _______added in fire extinguisher to from foam​

Answer 1

Answer:

LITRES FOAM FIRE EXTINGUISHERS (Chemical Foam) When the plunger is unlocked by turning it, the cap is released. The extinguisher is then inverted for the two liquids to mix. Carbon dioxide is produced by the reaction which pressurises the container and forces out the foam.

Answer 2

Answer:

sodium bicarbonate is the answer.