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संबंधित प्रश्न
On what basis and how will you determine whether air is saturated with vapour or not?
Calculate the time required to heat 20 kg of water from 10°C to 35°C using an immersion heater rated 1000 W. Assume that 80% of the power input is used to heat the water. Specific heat capacity of water = 42000 J kg−1 K−1.
Describe an experiment to show that water has maximum density at 4°C. What important consequences follow this peculiar property of water? Discuss the importance of this phenomenon in nature.
Explain the following
A hollow glass sphere which floats with its entire volume submerged in water at 4°C, sinks when water is heated above 4°C.
What are land and sea breezes? Explain with the help of a labeled diagram.
When the temperature of water decreases below 4 °C it’s volume _______.
In cold regions, in winter the pipes for water supply break.
Write scientific reason.
Fish can survive even in frozen ponds in cold regions.
Observe the following diagram and write the answers to the questions given below.
- Which process does the graph represent?
- What is the range of temperature responsible for the behaviour?
