Basic Laboratory Techniques
1. To cut a glass tube or glass rod
2. To bend the glass rod at an angle
3. To draw a glass jet from a glass tube
4. To bore a cork and fit a glass tube into it
Viva-Voce
2. Characterisation and Purification of Chemical Substances
1. To determine the melting point of the given unknown organic compound and its identification (simple laboratory technique)
Viva-Voce
2. To determine the boiling point of a given liquid when available in small quantity (simple laboratory method)
Viva-Voce
3. To prepare crystals of pure potash alum [K2SO4.Al2(SO4)3.24H2O] from the given impure sample
4. To prepare the pure crystals of copper sulphate from the given crude sample
5. To prepare pure crystals of benzoic acid from a given impure sample
Viva-Voce
3. Measurement of pH Values
1. To determine the pH value of vegetable juices, fruit juices, tap water and washing soda by using universal pH paper
2. To determine and compare the pH values of solutions of strong acid (HCI) and weak acid (CH3COOH) of same concentration
3. To study the pH change in the titration of strong base Vs. strong acid by using universal indicator paper
4. To study the pH change by common ion (CH3COO– ion) in case of weak acid (CH3COOH)
5. To determine the change in pH value of weak base (NH4OH) in presence of a common ion (NH4+)
6. To compare the pH of solutions of strong and weak acids of the same concentration-hydrochloric Acid (HCI) and Acetic acid (CH3COOH)
Viva-Voce
4. Chemical Equilibrium
1. To study the shift in equilibrium between ferric ions and thiocyanate ions by changing the concentrations of either of the ions
2. To study the shift in equilibrium between [Co(H2O)6]2+ and Cl– ions by changing the concentrations of either of the ions
Viva-Voce
5. Quantitative Analysis
1. To prepare M/10 oxalic acid solution by direct weighing method
2. To prepare M/10 solution of sodium carbonate by direct weighing method
3. To determine the strength of given solution of sodium hydroxide by titrating it against N/10 or M/20 solution of oxalic acid
4. To determine the strength of a given solution of hydrochloric acid by titrating it against a standard N/10 or M/20 sodium carbonate solution
5. Find the concentration of the solution of Oxalic acid (HOOC–COOH) fo given unknown concentration in grams/litre with the help of N/10 standard solution oxalic acid. In this, sodium corbonate solution is to be used as a secondary solution
Viva-Voce
6. Qualitative Analysis
Analysis of Anions or Acidic, Radicals
Analysis of Cations or Basic Radicals
Viva-Voce
7. Detection of Elements in Organic Compounds
1. To detect the presence of nitrogen, sulphur and halogens in a given organic compound by Lassaigne’s test
2. To detect the presence of nitrogen, sulphur and halogens in the given organic compound sample number .......... by Lassaigne’s test
Viva-Voce
INVESTIGATORY PROJECTS
1. Checking of Bacterial Contamination in Water
1. To check the bacterial contamination in drinking water by testing sulphide ions
Viva-Voce
2. Methods of Water Purification
1. To purify water from suspended impurities by using sedimentation
2. To purify water by boiling
3. To purify water by distillation method
4. To purify water by reverse osmosis technique
5. To purify water by GAC method
6. To purify water by bleach treatment
7. To purify water by oxidising agent
8. To purify water by ozone treatment method
Viva-Voce
3. Water Analysis
1. To test the hardness of different water samples
Viva-Voce
4. Foaming Capacity of Various Soaps
1. To compare the foaming capacity of different washing soaps
2. To study the effect of addition of sodium carbonate on foaming capacity of washing soap
Viva-Voce
5. Tea Analysis
1. To study the acidity of different samples of tea leaves (tea) by using pH paper
Viva-Voce
6. Analysis of Fruits and Vegetable Juices
1. To analyse the fruit and vegetable juices for the constituent present in them
Viva-Voce
7. Rate of Evaporation
1. To study the rate of evaporation of different liquids
Viva-Voce
8. Effect of Acids and Bases on Tensile Strength of Fibres
1. To compare the tensile strength of natural fibres and synthetic fibres
2. To study the effect of acids and bases on tensile strength of different fibres
3. To compare the tensile strength of cotton silk and nylon
4. To study the effects of acids and bases on tensile strength of woollen and cotton fibres
Viva-Voce
9. Purification of Impure Compounds
1. Purification of impure compounds
Viva-Voce
10. Apparatus used in Chemistry Lab