Question

Observe the given diagram and answer the following questions:

1. What is the name of the given apparatus?
2. Which phenomenon is studied with the help of this apparatus?
3. Which are the final temperatures in thermometers T₁ and T₂?
4. At what temperature the density of water maximum?
5. Give one example of the above phenomenon in nature.

Answer 1

1. Hope's apparatus
2. Anomalous behaviour of water.
3. T₁ = 4°C and T₂ = 0°C
4. 4°C
5. Aquatic plants and animals can survive even when the atmospheric temperature is below 0°C.