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प्रश्न
Rapid conversion of water into steam is an example of
विकल्प
evaporation
freezing
melting
vapourization.
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उत्तर
vapourization
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संबंधित प्रश्न
The temperature at which a liquid gets converted into its vapour state is called its
Differentiate between melting point and boiling point, giving atleast one example of each.
State the boiling point of water.
A certain quantity of water is heated from 20°C to 100°C. Its temperature is recorded after each 1 minute. The observations are:
| Time (in minute) | Temperature (in °C) |
| 0 | 20 |
| 1 | 30 |
| 2 | 40 |
| 3 | 50 |
| 4 | 60 |
| 5 | 70 |
| 6 | 80 |
| 7 | 90 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
The boiling point of water is defined as ______.
Assertion: The process of conversion of liquid water to its vapours by heating the liquid is called boiling.
Reason: The process of conversion of water vapours to liquid by cooling the vapours is called condensation.
A sample of water under study was found to boil at 102°C at normal temperature and pressure. Is the water pure? Will this water freeze at 0°C? Comment.
Conversion of solid to vapour is called sublimation. Name the term used to denote the conversion of vapour to solid.
We would have observed that the plate that covers the cooked food items has water droplets inside. Why? Explain.
Assertion (A): No-new substance is formed when water is heated to get steam.
Reason (R): Conversion of water into steam is a physical change.
