Explain why
pouring dry sand over the fire extinguishes it?

Explain why oil spreads over the surface of water?

Explain why ice floats over water.

Which chemicals are used in fire extinguishers?

Which gas is produced in soda acid fire extinguisher?

Explain how CO_2 is able to contrl fires.

Baking soda is used in small amount in making bread and cake. It helps to make this soft and spongy and aqua solution of baking soda turns red litmus blue. It is also used in Soda acid fire extinguisher. Use this information to answer the following questions HOw does it help in extinguishing fire?

How is baking soda prepared ? Why is it used as a fire extinguisher ?