Class 11 chemistry viva voce question and answers are concept focused and not question focused, which improves the conceptual knowledge based on the practicals performed by the students. Students can revise each and every chapter viva voce questions by referring to the question answers provided and obtain a confidence on them.
A general viva voce is based on the practicals. Prepare accordingly from the set of viva voce given after each experiment. Class 11 Chemistry Practicals Viva Voce Question and Answers is to judge whether the student has merely copied the experiments from the book or he/she has actually performed it in the laboratory. Also this helps to remember about the experiments performed in the laboratory. Keep revising.
Class 11 Chemistry Viva Questions With Answers
A. Basic Laboratory Techniques
B. Characterization and Purification of Chemical Substance
- Determination of melting point of an organic compound.
- Determination of boiling point of an organic compound.
Crystallisation involving impure sample of any one of the following:
C. Experiments Related to pH Change
(a) Any one of the following experiments:
- Determination of pH of some solutions obtained from fruit juices, solutions of known and varied concentrations of acids, bases and salts using pH paper or universal indicator.
- Comparing the pH of solutions of strong and weak acid of same concentration.
- Study the pH change in the titration of a strong acid with a strong base using a universal indicator.
(b) Study of pH change by common-ion effect in case of weak acids and weak bases.
D. Chemical Equilibrium
One of the following experiments:
- Study the shift in equilibrium between ferric ions and thiocyanate ions by increasing /decreasing the concentration of either of the ions.
- Study the shift in equilibrium between [Co(H2O)6]2+ and chloride ions by changing the concentration of either of the ions.
E. Quantitative Estimation
- Using a chemical balance.
- Preparation of standard solution of oxalic acid.
- Determination of strength of a given solution of sodium hydroxide by titrating it against standard solution of oxalic acid.
- Preparation of standard solution of sodium carbonate.
- Determination of strength of a given solution of hydrochloric acid by titrating it against standard sodium carbonate solution.
F. Qualitative Analysis
- Determination of one anion and one cation in a given salt.
Cations:Â Pb2+, Cu2+, As3+, Al3+, Fe3+, Mn2+Â , Zn2+, Â Co2+, Ni2+, Ca2+, Sr2+, Ba2+, Mg2+, NH4+
Students will gain a better understanding of the concept by doing the experiments since they will be able to see the changes taking place right in front of their eyes. Their fundamentals will become strong as they learn by doing. They will also develop an interest in the subject as a result of this practice.
Also Check more on:
- Important Questions for Class 12 Chemistry
- Important Questions for Class 11 Chemistry
- Marks-Wise Important Questions for Chemistry
- Class 12 Chemistry MCQs
- Class 11 Chemistry MCQs
- Class 10 Chemistry MCQs
- Class 9 Chemistry MCQs
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