IGNOU BCHS-183 December 2024 Previous Year Question Paper

Q1.(a) Describe in brief the features of science which can help in improving teaching- learning of science in laboratories. 5

(b) Differentiate between fixed design laboratories and flexible design laboratories.

Q2.(a) Write a note on the sterilizing equipments used in microbiological preparation room. 5

(b) Enumerate the five sections that constitute the contents of a formal report.

Q3.(a) What are the common sources of vibrations in a laboratory ? How can you reduce such vibrations ? 5

(b) What is the use of bin card in a laboratory ? Illustrate your answer.

Q4.(a) List the types of registers used for record keeping in a laboratory. Give any four examples of stocks maintained in a biology laboratory. 5

(b) Discuss the input and output devices in a personal computer.

Q5.(a) List any two fuel sources and any three common causes of an accidental fire in a laboratory. 5

(b) Why is earthing essential for electrical appliances ? Explain.

Q6.(a) Discuss the common hazards encountered in a biology laboratory. 5

(b) Describe the different personal protective devices in a laboratory.

Q7.(a) Describe the first aid procedure of electric shock. 5

(b) What are occupational diseases ? Explain taking a suitable example. 5 qe : fret Wa yet we oe aie wet We को Ae TAT Bl