Advertisements
Advertisements
Question
Why are we able to sip hot tea or milk faster from a saucer rather than from a cup ?
Advertisements
Solution
We are able to sip hot tea or milk faster from a saucer rather than from a cup because saucer has a larger surface area due to which evaporation occurs faster. The vapours take up the latent heat from hot milk or tea kept in the saucer faster, than in a cup which has a smaller surface area than the saucer and make the contents of the saucer cool down faster.
APPEARS IN
RELATED QUESTIONS
A liquid can change into vapour state at all temperatures.
Explain why in hot summer days water remains cool in earthen pots.
Would you cool a bucket of water more quickly by placing it on ice or by placing ice in it? Give reasons for your answer.
What type of clothes should we wear in summer ? Why ?
What is evaporation ? State the various factors which affect evaporation.
Which of the following are also considered to be the states of matter ?
- Plasma
- Platelets
- BEC
- BHC
Give a geographical reason:
Air becomes saturated.
Comment on the following statements:
Evaporation produces cooling.
The rate of evaporation ______ with rising temperature.
Evaporation is a fast process and occurs only at the surface of the liquid.
