100 mL of 5% (w/v) solution of NaCl in water was prepared in 250 mL beaker. Albumin from the egg was poured into NaCl solution and stirred well. This resulted in a/an:

A plane electromagnetic wave EZ = 100 cos (6 × 10⁸ t + 4x) V/m, where x is in metre and t is in second. propagates in medium, what is refractive index of the medium?

The process of settling of colloidal particles is known as

Which of the following is not a characteristic of physisorption of a gas on solid surface?

Emulsion is a collodial solution of 

The coagulating power of ions for haemoglobin decreases in the order