Inert gases like Helium on Nitrogen both can be used for the storage of fresh sample of oil for a long time, as they do not react with most elements, including oxygen. Thus, these gases create an inert environment for ...

The chemicals used in soda acid fire extinguisher as sodium hydrogen carbonate and sulfuric acid. The gas evolved when the two reactants react is carbon dioxide which is used for extinguishing electrical fires. Reaction will be between two chemicals are:

As light travels from a denser medium water to a rarer medium air, the light rays undergo refraction and bend away from the normal. To an observer the position of fish in water appears to be raised as shown in ...