M.Phil Chemistry ALAGAPPA UNIVERSITY - DISTANCE EDUCATION M.Phil (Chemistry) DEGREE EXAMINATION, MAY 2010. RESEARCH METHODOLOGY IN CHEMICAL RESEARCH Question paper

ALAGAPPA UNIVERSITY - DISTANCE EDUCATION
M.Phil (Chemistry) DEGREE EXAMINATION, MAY 2010.
RESEARCH METHODOLOGY IN CHEMICAL RESEARCH

Time : Three hours Maximum: 100 marks
PART A — (10 x 3 = 30 marks)

Answer ALL the questions.

1. State and explain the term database.
2. How will you create an e-mail id?
3. What are arrays?
4. What are constructors?
5. Define the term sublimation.
6. Explain the significance of Rf value in chromatography.
7. Write any three hazardous chemicals.
8. What are synthons? Give examples.
9. What is Annelation reaction?
10. What is ''student t test''? Explain its significance.

PART B — (5 × 6 = 30 marks)
Answer ALL questions.

11. (a) Distinguish between primary source and secondary source. Give suitable examples.
Or
(b) What is meant by browsing? How will you download ''polarisability'' for your studies?

12. (a) Explain file handling procedures with examples.
Or
(b) What are pointers? How will you access a variable in C language through a pointer? Illustrate with an example.

13. (a) Write briefly on HPLC.
Or
(b) Explain the various methods for purification of solids.

14. (a) Give an account on asymmetric synthesis.
Or
(b) Discuss the method of selective protection of functional groups with suitable examples.

15. (a) Define the terms accuracy and precision with suitable examples.
Or
(b) What are errors? Explain the different types of error.

PART C — (4 × 10 = 40 marks)
Answer any FOUR questions.

16. (a) What is chemical abstract? How is it useful in the literature survey of your proposed work on ''High frequency electrochemical synthesis''? (4)
(b) Explain the following terms :
(i) Patents
(ii) Encylopedia
(iii) Journals. (6)

17. (a) Explain the operators in C++ that cannot be overloaded. (4)
(b) Explain the following terms in C Programme.
(i) Constants
(ii) Variables
(iii) Inheritance. (6)

18. (a) State and explain carcinogenic and toxic chemicals.
(4)
(b) Explain the principle, procedure and applications of thin layer chromatography. (6)

19. Explain the principles of organic synthesis. (10)

20. (a) How many significant figures are there in the following numbers :
(i) Rs. 646
(ii) 0.377 mg.
(iii) 1.49 x 10^–3 nm
(iv) 20.2 ml. (4 x1/2 = 2)
(b) Define and illustrate the following :
(i) Correlation coefficient
(ii) Confidence limit
(iii) Standard deviation. (2 + 3 + 3)

21. (a) Explain the principle, procedure and applications of gas chromatography. (8)
(b) A titration was repeated four times and the litre values are found to be 10.0, 10.1, 9.9, 10.2 ml. Calculate the mean and median. (2)