the flocculating ion added, greater is its power to cause precipitation a) if both assertion and reason are true and reason is the correct explanation of assertion. b) if both assertion and reason are true but reason is not the correct explanation of assertion. c) assertion is true but reason is false d) both assertion and reason are false. .
Statement : To stop bleeding from an injury, ferric chloride can be applied. Which comment about the statement is justified? XII U10-Surface XII U10-Surface - - - - a) It is not true, ferric chloride is a poison. b) It is true, Fe + ions coagulate blood which is a negatively charged sol c) It is not true; ferric chloride is ionic and gets into the blood stream.
d) It is true, coagulation takes place because of formation of negatively charged sol with Cl - . . Hair cream is a) gel b) emulsion c) solid sol d) sol. .
Which one of the following is correctly matched? a) Emulsion – Smoke b) Gel – butter c) foam – Mist d) whipped cream – sol . The most effective electrolyte for the coagulation of As S Sol is a) NaCl b) Ba(NO ) c) K [Fe(CN) ] d) Al (SO ) . Which one of the is not a surfactant?
a) CH (CH ) (CH ) CH Br b) CH (CH ) NH c) CH (CH ) CH OSO Na + d) OHC (CH ) COO Na + . The phenomenon observed when a beam of light is passed through a colloidal solution is a) Cataphoresis b) Electrophoresis c) Coagulation d) Tyndall effect . In an electrical field, the particles of a colloidal system move towards cathode. The coagulation of the same sol is studied using K SO (i), Na PO (ii),K [Fe(CN) ] (iii) and NaCl (iv) Their coagulating power should be a) II > I>IV > III b) III