Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:

Volume of air remaining in the lungs even after a forcible expiration is

In a normal healthy individual, the volume of air remaining in the lungs even after forcible expiration is about

Maximum volume of air a person can breathe in after a forced expiration is

Volume of air that will remain in the lungs after normal expiration is equal to

Why do statues and vessels made up of copper become dull green after certain time ?

A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is

According to V.B.T. a covalent bond is formed by the overlapping of half filled atomic orbitals with electron spinning in the opposite direction. The strength of a bond depends on extent of overlapping. Double bond energy is not twice that of single bond energy because a double bond is made up of a weak a bond and strong o bond. Bond energy is highest in