Among the following sols the one which is hydrophobic is
Options
(a) starch (b) sulphur (c) gum (d) gelatin
Correct Answer:
sulphur
Explanation:
No explanation available. Be the first to write the explanation […]
Cosin used to detect end point of precipitation titration by absorption is called
Options
(a) chemical indicator (b) absorption indicator (c) normal indicator (d) adsorption indicator
Correct Answer:
adsorption indicator
Explanation: […]
The most effective electrolyte for the coagulation of As₂S₃ sol is
Options
(a) NaCl (b) Ba(NO₃)₂ (c) K₃[Fe(CN)₆] (d) AlCl₃
Correct Answer:
AlCl₃
Explanation:
No explanation available. Be the first to write the […]
If the dispersed phase is a liquid and the dispersion medium is solid, the colloid is known as a
Options
(a) foam (b) gel (c) emulsion (d) sol
Correct Answer:
gel
Explanation:
No […]
The process which is catalysed by one of the products is called
Options
(a) negative catalysis (b) acid-base catalysis (c) positive catalysis (d) auto-catalysis
Correct Answer:
auto-catalysis
Explanation:
No explanation available. Be the […]
Which one of the following method, is commonly used method for destruction of colloid
Options
(a) dialysis (b) condensation (c) filteration by animal membrane (d) by adding electrolyte
Correct Answer:
by adding electrolyte
The best coagulant for the precipitation of Fe(OH)₃ is
Options
(a) Na₂HPO₃ (b) NaNO₃ (c) Na₃PO₄ (d) Na₂SO₄
Correct Answer:
Na₃PO₄
Explanation:
No explanation available. Be the first to write the explanation for […]
The physical adsorption of gases on the solid surface is due to
Options
(a) van der Waals forces (b) covalent bonding (c) hydrogen bonding (d) all of these
Correct Answer:
van der Waals […]
Which of the following statements is true
Options
(a) Chemisorption forms unimolecular layer (b) Chemisorption is a reversible process (c) Chemisorption is independent of pressure (d) Chemisorption has low enthalpy change
Correct Answer: […]
Gold number gives
Options
(a) the amount of gold sol present in the colloid (b) the amount of gold sol required to coagulate the colloid (c) the amount of gold sol required to […]
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