1. One Å (Angstrom) is equal to
(A) 10⁻¹⁰ m
(B) 10⁻⁸ m
(C) 10⁻⁶ m
(D) 10⁻⁴ m
2. Solute particles in colloidal solution are called
(A) Disperse phase
(B) Outer phase
(C) Combine phase
(D) Inter phase
3. Formation of hazy beam in colloidal solution is known as
(A) Cataphoresis
(B) Tyndall effect
(C) Electrophoresis
(D) Osmosis
4. Example of colloidal solution
(A) Gum, jelly, starch
(B) Sugar solution
(C) Sand and water
(D) Salt solution
5. The zigzag movement of colloidal particles
(A) Osmosis
(B) Cataphoresis
(C) Brownian movement
(D) Coagulation
6. Example of lyophobic sols
(A) Sulphide
(B) Gum
(C) Rubber
(D) Protein
7. Equilibrium constant is represented by
(A) Kp
(B) Kc
(C) Kv
(D) All of these
8. Paint is an example of
(A) Standard sol
(B) Pure sol
(C) True sol
(D) Colloidal solution
9. 10 Å to 2000 Å particles are called
(A) True solution
(B) Colloidal solution
(C) Suspension
(D) Mixture
10. Inverse of peptization
(A) Ionization
(B) Neutralization
(C) Coagulation
(D) None of these