Advertisements
Advertisements
Question
Solution
APPEARS IN
RELATED QUESTIONS
Water is used as a cooling agent.
A calorimeter contains 50 g of water at 50°C. The temperature falls to 45°C in 10 minutes. When the calorimeter contains 100 g of water at 50°C, it takes 18 minutes for the temperature to become 45°C. Find the water equivalent of the calorimeter.
Draw a graph between volume and temperature, when 5 cm3 of ice at -10°C is heated to form water at +10°C.
A deep pond of water has its top layer frozen. What will be the likely temperature of water layer just in contact with ice?
A deep pond of water has its top layer frozen. What will be the likely temperature of water layer at the bottom of the pond?
What are hot spots? How can you extract energy from a hot spot, if it does not come in contact with underground water?
Write a short note.
Anomalous behaviour of water
Match the columns:
| Column ‘A’ | Column ‘B’ |
| The density of water is maximum at | (a) 0°C |
| (b) 4°C | |
| (c) 100°C |
