When Hydrogen starts burning in air, it produces ? A. Ammonia B. Water C. Methane D. Carbonic Acid

The correct answer is: B. Water

When hydrogen starts burning in air, it produces water vapor and heat. The chemical reaction is:

2H2 + O2 → 2H2O

This reaction is exothermic, meaning that it releases heat. The heat produced by the reaction can be used to generate electricity or to power other devices.

Ammonia (NH3) is a gas that is produced when hydrogen reacts with nitrogen. Methane (CH4) is a gas that is produced when hydrogen reacts with carbon. Carbonic acid (H2CO3) is a weak

acid that is produced when carbon dioxide reacts with water.

I hope this helps!