91Ó°ÊÓ

Milk is a colloid in which: (a) liquid is dispersed in liquid (b) Gas is dispersed in liquid (c) Sugar is dispersed in water (d) Solid is dispersed in liquid

Butter is a colloidal solution of: (a) Solid-solid (b) Liquid-solid (c) Solid-liquid (d) Gas-solid

Alum is widely used to purify water since: (a) It forms complex with clay particles (b) It coagulates the mud particles (c) It exchanges \(\mathrm{Ca}^{2+}\) and \(\mathrm{Mg}^{2+}\) ions present in hard water (d) Its sulphate ion is water purifier

Difference between crystalloids and colloids is of: (a) Solubility (b) Reactivity (c) Size of particles (d) None of these

Which of the following colloids are solvent loving: (a) Lyophilic (b) Lyophobic (c) Hydrophilic (d) None of these

If the dispersed phase is a liquid and the dispersion medium is solid, the colloid is known as: (a) Foam (b) Sol (c) Emulsion (d) Gel

The diameter of colloidal particle ranges from: (a) \(10^{-9} \mathrm{~m}\) to \(10^{-6} \mathrm{~m}\) (b) \(10^{-6} \mathrm{~m}\) to \(10^{-3} \mathrm{~m}\) (c) \(10^{-12} \mathrm{~m}\) to \(10^{-9} \mathrm{~m}\) (d) \(10^{-3} \mathrm{~m}\) to \(10^{-6} \mathrm{~m}\)

A colloidal solution of a liquid, in a solid is termed as: (a) Aerosol (b) Gel (c) Emulsion (d) Sol

The process of separating a crystalloid, from a colloid by filtration, is called: (a) Emulsification (b) Dialysis (c) Coagulation (d) Peptization

Smoke is a colloidal dispersion of a: (a) Solid in a gas (b) Liquid in a gas (c) Gas in a solid (d) Gas in a gas