As the student has focussed a distant blue coloured building on the screen using a convex lens, a real inverted and diminished image is formed at the principal focus of the convex lens. As object is quite far, a diminished ...

The digestion of food is the break down of complex food substances by the enzymes secreted by various parts of the digestive system. Hormones are secreted by the endocrine glands and act on specific targets.

The given reaction is the reaction between Nitric Acid and Calcium Hydroxide to form Calcium Nitrate (a salt and water). The reaction between an acid and a base is known as “neutralization reaction”. It also involves formation of new compounds ...

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: