SECTION B: THEORY
INSTRUCTION: ANSWER ANY THREE QUESTIONS IN THIS PART
1. a. i. State two advantages of alcohol over mercury as a thermometric liquid.
a. ii. When the bulb of a thermometer is placed in a beaker of hot water, the level of the mercury first falls and then rises gradually. Explain this observation.
Answer (1)
Alcohol has advantages over mercury as a non-toxic and low-temperature liquid. When placed in hot water, a thermometer’s mercury level initially falls due to temperature dynamics before rising as it heats up. This behavior illustrates principles of heat transfer and thermal expansion. ;
