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Class 12
Class 12

Preparation of Lyophilic and Lyophobic Sols
(a) Preparation of one lyophilic and one lyophobic sol Lyophilic sol - starch, egg albumin and gum Lyophobic sol - aluminium hydroxide, ferric hydroxide, arsenous sulphide.
Effectiveness of Different Common Oils in Forming Emulsions
Study of the role of emulsifying agents in stabilizing the emulsion of different oils.
Preparation of Inorganic Compounds
To prepare: 1. A pure sample of ferrous ammonium sulphate (Mohr’s salt) [FeSO4. (NH4)2SO4. 6H2O] 2. A pure sample of potash alum (Fitkari) [K2SO4. Al2(SO4). 24H2O] 3. A pure sample of the complex potassium trioxalatoferrate (III), K3[Fe(C2O4)3]. 3H2O
Determination of concentration of KMnO₄ solution
To determine the strength of KMnO4 solution by titrating it against a standard solution of: 1.Oxalic acid 2.Ferrous ammonium sulphate (Mohr’s salt)
Preparation of Organic Compounds
To prepare; 1.Acetanilide 2.Dibenzal acetone 3.p-Nitroacetanilide 4.2-Naphtholaniline dye
Kinetics Study on the Reaction between Iodide Ions and Hydrogen Peroxide
To study the reaction rate of reaction of iodide ions with hydrogen peroxide at different concentrations of iodide ions.
Paper Chromatography
(1) Separate the coloured components present in the mixture of red and blue inks by ascending paper chromatography and find their Rf values. (2) Separate the coloured components present in the extract of spinach leaves by ascending paper chromatography
Qualitative Analysis of Proteins
To study some simple tests of Proteins.
Tests for the functional groups
Tests for the functional groups present in organic compounds: Unsaturation, alcoholic, phenolic, aldehydic, ketonic, carboxylic and amino (Primary)groups.
Kinetics Study on the Reaction between Sodium Thiosulphate and Hydrochloric Acid
Effect of concentration on the rate of reaction between sodium thiosulphate and hydrochloric acid
Kinetics Study on the Reaction between Potassium iodate and Sodium Sulphite
Reaction between potassium iodate, (KIO3) and sodium sulphite: (Na2SO3) using starchsolution as indicator (clock reaction)
To determine: (a) Water equivalent of Calorimeter. (b)The enthalpy of dissolution of the given salt.
Determination of EMF of a Cell
Variation of cell potential in Zn/Zn2+|| Cu2+/Cu with change in concentration of electrolytes(CuSO4 or ZnSO4) at room temperature.
Qualitative Analysis of Carbohydrates
To study some simple tests for carbohydrates.
Qualitative Analysis of Oils and Fats
To study some simple tests of oils and fats