Boiling of an egg is a change which is:

(A) Physical
(B) Chemical
(C) Physiological
(D) Morphological

Q. Rusting of iron is an example of:
(A) Absorption
(B) Adsorption
(C) Oxidation
(D) Reduction

Q. Mixing acid and base is a change which is:
(A) Physical
(B) Chemical
(C) Physiological
(D) Morphological

Answers:
1. (B) Chemical
2. (C) Oxidation
3. (B) Chemical