CBSE Lab Manual Practical Manual Chemistry for Class 12

• Sahitya Bhawan Lab Manual with theory, Viva-voce Questions and Laboratory instruction for class 9, 10, 11, 12 has been prepared in accordance with the NCERT, CBSE, UP Board and other state boards syllabus.
• Practical book provides a better understanding of various concepts in a lucid manner.
• The entire matter is prepared in a way that it provides complete understanding of each topic.
• Viva-voice questions and answers helps the students in having a better understanding of concepts.
• Viva Voce questions are followed with answers.After theory matter, blank pages are provided for writing experiments.
• Lab Manual series contains Science, Mathematics, Social Science, Physics, Chemistry, Biology, Physical Education.
• Practical File | Practical file pdf ebook | State Board, Project work | How to write preface for a project | Latest Edition |State Board |Based on Ncert textbook |As per Ncert book | Ncert book questions |First class |Second class |Third class |Fourth class |Fifth class |Sixth class |Seventh class |Eight class |Ninth class |Tenth class |Eleventh class |Twelfth class |Worksheet | Book list |Hand writing book | Pdf dowanload (ebook).

Contents

• Chemistry Laboratory : An Introduction
• Viva-voce Questions with answers

1. Surface Chemistry

• Experiment 1.1 To prepare colloidal solution (sol) of starch.
• Experiment 1.2 To prepare colloidal solution (sol) of gum.
• Experiment 1.3 To prepare colloidal solution (sol) of egg albumin.
• Experiment 1.4 To prepare colloidal solution (sol) of ferric hydroxide Fe(OH)3.
• Experiment 1.5 To prepare aluminium hydroxide [Al(OH)3] sol.
• Experiment 1.6 To prepare colloidal solution of arsenious sulphide.
• Experiment 1.7 To study the dialysis of starch sol containing sodium chloride through a cellophane or parchment paper.
• Experiment 1.8 To study the effectiveness of different common oils (castor oil, cotton seed oil, coconut oil, kerosene oil, mustard oil) in forming emulsions.
• Experiment 1.9 To compare the effectiveness of a number of emulsifying agents in forming emulsions.
• VIVA-VOCE QUESTIONS WITH ANSWERS

2. Chemical Kinetics

• Experiment 2.1 To study the effect of concentration on the rate of the reaction between sodium thiosulphate and hydrochloric acid.Experiment 2.2 To study the effect of temperature on the rate of reaction between sodium thiosulphate solution and HCl.
• Experiment 2.3 To study the rate of reaction of iodide ions with hydrogen peroxide at room tem-perature using different concentrations of iodide ions.
• Experiment 2.4 To study the rate of reaction between potassium iodate (KIO3) and sodium sulphite (Na2 SO3) in acidic medium at room temperature using different concentrations of KIO3 and starch as indicator.
• VIVA-VOCE QUESTIONS WITH ANSWERS

3. Thermochemistry

• Experiment 3.1 To determine the calorimeter constant (W) of calorimeter (polythene bottle).
• Experiment 3.2 To determine the enthalpy of dissolution of copper sulphate or potassium nitrate.
• Experiment 3.3 To determine the enthalpy of neutralisation of hydrochloric acid with sodium hyd-roxide solution.
• Experiment 3.4 To determine the enthalpy change during the interaction (hydrogen bond formation) between acetone and chloroform.
• VIVA-VOCE QUESTIONS WITH ANSWERS

4. Electrochemistry

• Experiment To study the variation of cell potential in Zn|Zn2+||Cu2+|Cu with change in concentration of electrolytes (CuSO4 or ZnSO4) at room temperature.
• VIVA-VOCE QUESTIONS WITH ANSWERS

5. Chromatography

• Experiment 5.1 To separate the coloured components present in the given extract of leaves and flower by ascending paper chromatography and determine their Rf values.
• Experiment 5.2 To separate constituents present in an inorganic mixture containing Pb2+ and Cd2+ions by using ascending paper chromatography and determine their Rf values.
• VIVA-VOCE QUESTIONS WITH ANSWERS

6. Preparation of Inorganic Compounds

• Experiment.1 To prepare crystals of ferrous ammonium sulphate (Mohrs salt) [FeSO4.(NH4)2SO4.6H2O]
• Experiment 6.2 To prepare crystals of potash alum [K2SO4. Al (SO4) 3. 24H2O].
• Experiment 6.3 To prepare crystals of potassium trioxalatoferrate (III), K3[Fe(C2O4)3.3H2O].
• VIVA-VOCE QUESTIONS WITH ANSWERS

7. Preparation of Organic Compounds

• Experiment 7.1 Preparation of acetanilide from aniline.
• Experiment 7.2 Preparation of dibenzal acetone.
• Experiment 7.3 Preparation of p-nitro acetanilide from acetanilide.
• Experiment 7.4 Preparation of 2-naphthol aniline dye.
• VIVA-VOCE QUESTIONS WITH ANSWERS

8. Test for the Functional Groups Present in Organic Compounds

• Experiment 8.1 (A) To test the presence of unsaturation.
• Experiment 8.2 (B) To test the presence of alcoholic group.
• Experiment 8.3 To test the presence of phenolic groups.
• Experiment 8.4 To test the presence of aldehydic and ketonic groups.
• Experiment 8.5 To test the presence of carboxylic group.
• Experiment 8.6 To test the presence of amino groups.
• VIVA-VOCE QUESTIONS WITH ANSWERS

9. Study of tests of carbohydrates, fats and protens

• Experiment 9.1 To test the presence of carbohydrates in food samples.
• Experiment 9.2 To test the presence of fats and oils in food samples.
• Experiment 9.3 To test the presence of proteins in food samples.
• VIVA-VOCE QUESTIONS WITH ANSWERS

10. Volumetric analysis

• Experiment 10.1 To prepare 250 ml of Solution of oxalic acid from crystalline oxalic acid.
• Experiment 10.2 To prepare Ferrous Ammonium Sulphate (Mohrs salt) solution. Using this solution find out the morality and strength of the given KMnO4 solution.
• Experiment 10.3 To prepare Solution of oxalic Acid. With its help, determine the molarity and stre-ngth of the given solution of potassium permanganate.
• VIVA-VOCE QUESTIONS WITH ANSWERS

11. Qualitative Analysis

• VIVA-VOCE QUESTIONS WITH ANSWERS

12. INVESTIGATORY Projects

• PROJECT 1 To determine the amount of oxalate ions in a guava fruit at different stages of ripening
• VIVA-VOCE QUESTIONS WITH ANSWERS PROJECT
• To determine the quality of casein present in different samples of milk.
• VIVA-VOCE QUESTIONS WITH ANSWERS
• PROJECT 3 Preparation of soyabean milk and its comparison with the natural milk with respect tocurd formation, effect of temperature, etc.
• VIVA-VOCE QUESTIONS WITH ANSWERS
• PROJECT 4 To study the effect of potassium meta bisulphite as food preservative under various conditions temperature, concentration and time.
• VIVA-VOCE QUESTIONS WITH ANSWERS
• PROJECT 5 Study of digestion of starch by salivary amylase and effect of pH and temperature on it
• EXPERIMENT 1 Effect of different pH on the activity of salivary amylase on starch.
• EXPERIMENT 2 Effect of different Temperatures on the activity of salivary amylase on starch.
• VIVA-VOCE QUESTIONS WITH ANSWERS
• PROJECT 6 Comparative study of the rate of fermentation of following materials : wheat flour, gram flour, patato juice, carrot juice etc.Experiment 1 To compare the rates of fermentation of the given samples of wheat flour, gram flour and potato juice.Experiment 2 To compare the rates of fermentation of the given samples of apple juice, carrot juice and orange juice.
• VIVA-VOCE QUESTIONS WITH ANSWERS
• PROJECT 7 Extraction of essential oils present in Saunf (aniseed), Ajwain (Carum), Ilaichi (Cardamom)
• VIVA-VOCE QUESTIONS WITH ANSWERS
• PROJECT 8 Study of common food adultrants in fat oil, butter, sugar, turmeric powder, chlli powder and pepper
• Experiment 1 To detect the presence of adulterants in fat, oil and butter.
• Experiment 2 To detect the presence of adulterants in sugar
• Experiment 3 To detect the presence of adulterants in samples of chilli powder.
• Experiment 4 To detect the presence of adulterants in samples of turmeric powder.
• Experiment 5 To detect the presence of adulterants in samples of pepper.
• VIVA-VOCE QUESTIONS WITH ANSWERS”

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