The electromagnetic radiation used to produce diffraction pattern is:

Materials that can return to their old shape after stretching are called:

Mendeleev ' s periodic table was based on

The metal which conduct electricity in the liquid state is:

The mineral present in the clay is:

A triple bond is exist in

The material used for the refractory bricks for furnaces:

The size of the charge on an ion is a measure of its:

A metalloid among the following

The allotrope of carbon used for cutting glass: