23.80%
26.80%
28.80%
27.50%
The egg of hen is a :
The electric cell is a device to obtain
The electromagnetic waves used in the telecommunication are_.
The electron affinity for the inert gases is
The electronic configuration of an atom having atomic number 20 is
The element absorbed both in cation anion form is
The element which is used for vulcanizing rubber
The element with highest 1st ionisation energy is
The elimination of toxic nitrogenous waste and excess water in man is by
The energy emitted by the Sun is due to
