How is the following expression for radius of hydrogen atom arrived at? 

Describe the experimental setup of TGA. Taking suitable examples explain the effect of furnace atmosphere on TG curves.

A conductivity cell shows a resistance of 3950 Ω at 25°C when filled with the experimental solution and 4864 Ω at the same temperature when filled with 0.02 M KCI solution. If the conductivity of the solution is 2.767 x 10^-3 S cm^-1, calculate the conductivity of the experimental solution.

Describe different factors effecting conductance.

Discuss design and working of calomel and glass electrodes.

Drive an expression for the 'operational definition of pH.

Why is selectivity coefficient of an ion exchanger important? Give the order of selectivity coefficients of different cations and anions.

Briefly explain various factors affecting the efficiency of column chromatography

Give at least five examples each of mobile phases and locating agents used in paper chromatography

How can a mixture of three components be separated using ascending paper chromatography? Draw the suitable diagram and explain.

How is extraction of metal chlorides and nitrates carried out using solvation?

Discuss the extraction of an organic compound when it is present in the aqueous phase along with the impurities.

Briefly explain the extractions with diphenylthiocarbazone. How is change in pH useful in such extractions?

What is significance of F-test? Explain using a suitable example.

Define determinate errors. How we can reduce them.

Writ the procedure for the sampling of soil samples.

List its different editions along with their URLs.

• Select Delhi edition.

• Browse the archives of its Delhi edition covering the last 15 days.

• Select one article each from the editorial/opinion page of the newspaper for the selected 15 days.

• Select any five editorial articles and try to download them in one MS word file

• Select any five images from the newspaper and save them in one MS word file

• Save the articles/images in one Folder titled 'HT Editorial Items".

General Instructions for Practical Assignment:

i) Documents, data, database, etc. will be provided by the Counsellor/ Practical Supervisor in the Study/Tele Learning Centre to work on practical assignment.

ii) You are required to do the practical assignment in the Study/Tele Learning Centre.

iii) Make Screen Captures for all the answers and save them question wise in one file. Wherever necessary also save the output in MS Word. The Counsellor/ Practical Supervisor will evaluate these Screen Captures/ MS Word files and give marks accordingly.

iv) All questions are compulsory.

Compare one of the following aspects of Hispanic culture with that of India. You can use image or any other illustration (answer in English).

a. Hispanic music and Indian music

b. Hispanic festivals and Indian festivals

Describe tu casa usando las siguientes preguntas como referencia.

¿De dónde eres? ¿Dónde vives? ¿Cómo es tu casa? ¿Con quién vives? ¿Te gusta tu casa? ¿Te gusta tu barrio? ¿Quieres cambiar de casa o del barrio? ¿Cuál es tu lugar favorito en tu casa? ¿Por qué? Cómo son tus vecinos?