A person suffering from long sightedness wears spectacles having:

Type of shed formed in single lift single cylinder jacquard loom is

Sley eccentricity 'e' is given by...........where 'r' = radius of crank and 'l' is length of connecting rod.

The electrolyte which is important in maintaining normal muscular activity in the heart and skeletal muscle:

The number of bones in the human body system :

Science of soil is called :