IGNOU BCHS-183 December 2025 Previous Year Question Paper

Q1.(a) Outline any five approaches that you should adopt while working as a laboratory staff. 5

(b) Why is ventilation so vital for a laboratory ? List any four means of providing ventilation.

Q2.(a) Discuss the environmental considerations for the arrangement of stores in a laboratory. 5

(b) List the types of communication. Briefly explain any one type of communication.

Q3.(a) Write a short account on the disposal of different kinds of wastes in a laboratory. 5

(b) What are the different laboratory components for which you need to keep records ? Explain in brief the usage of bin cards in this regard.

Q4.(a) Elucidate the different sources of scientific information in a laboratory. 5

(b) Briefly explain any two types of application softwares for use in a computer.

Q5.(a) What do you mean by Fire Triangle pertaining to fire incident in a laboratory ? Justify your answer with illustration. 5

(b) What is the cause of Earth Leakage ? Explain the operation of Earth Leakage Circuit Breaker (ELCB) with schematic diagram.

Q6.(a) Differentiate between hazardous materials represented by red and yellow colours. What informations should be available ina label forachemical? 5

(b) List any five proper codes of practice in a laboratory.

Q7.(a) List five major procedural steps for reporting any accident in a laboratory. 5

(b) Briefly explain any five supervision rules associated with experiments using animal model.