Which of the following gases is not one of the components of the atmospheric air

The main source of oxygen gas in air is process

Hydrogen peroxide is used in preparing

...............gas doesn't burn, but it helps in burning.

The rapid combination between oxygen and elements producing heat and light is called

Photosynthesis process depends on the presence of...............gas

The percentage of carbon dioxide gas in air is.....

...........gas is prepared by adding dilute hydrochloric acid to calcium carbonate.

We can extinguish fire using ......... gas.

Carbon dioxide gas is collected by..........