Explain the use of the adjectives in the following phrases.
(i) shaggy monsters
(ii) brackish lakes
(iii) rickety table
(iv) hairpin bend
(v) rudimentary general stores

Explain the following terms : (i) diprotium (ii) dihydrogen (iii) proton (iv) hydron.

Explain the following : (i) Acid salt (ii) Fire extinguisher (iii) Olfactory indicator (iv) pH-scale

Explain the meaning of the following: (i) Class-interval(ii) Class size (iii) Frequency (iv) Class limits (v) True class limits

Explain the meaning of the following: (i) Class-interval(ii) Class size (iii) Frequency (iv) Class limits (v) True class limits

Identify the physical changes and chemical changes in the following . (i) Curdling of milk (ii) Sawing of wood (iii) Melting of vegetable ghee (iv) Bending of an iron rod (v) Drying of a leaf

Explain the following terms: (i) Electrophoresis (ii) Coagulation (iii) Dialysis (iv) Tyndall effect.