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प्रश्न
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
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उत्तर
The process of drying the shirt can be made faster in the following ways:
- Spread the shirt to increase the surface area which will increase the rate of evaporation.
- Put it in the sun to increase the temperature to increase the rate of evaporation.
- Keep it under the fan to increase the wind speed which increases the rate of evaporation.
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संबंधित प्रश्न
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Which of the following are compounds ?
- CO
- No
- NO
- Co
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which one has the smallest particles ?
State whether the following statement are true or false :
Alcohol can be separated from a mixture of alcohol and water by a separating funnel.
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Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.
The dyes present in fountain pen ink can be separated by the technique of :
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The property which allows the metals to be hammered into their sheets is ______.
Match the physical quantities given in column A to their S I units given in column B:
| (A) | (B) | ||
| (a) | Pressure | (i) | cubic metre |
| (b) | Temperature | (ii) | kilogram |
| (c) | Density | (iii) | pascal |
| (d) | Mass | (iv) | kelvin |
| (e) | Volume | (v) | kilogram per cubic metre |
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Name a non-metal which exists as a liquid at room temperature.
Which statement is not correct for a mixture
The physical state of water at 373 K is ______.
Evaporation does form bubbles.
Compressibility of solids: ______.
Evaporation is always accompanied by ______ in temperature.
Give an example of a molecule.
