Advertisements
Advertisements
प्रश्न
Conversion of solid to vapour is called sublimation. Name the term used to denote the conversion of vapour to solid.
Advertisements
उत्तर
Deposition
APPEARS IN
संबंधित प्रश्न
Differentiate between melting point and boiling point, giving atleast one example of each.
Describe an experiment to demonstrate that water absorbs heat during boiling at a constant temperature.
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 |
A pressure cooker is based on the principle that boiling point of water increases with the ______.
Choose the correct statement of the following
The boiling points of diethyl ether, acetone and n-butyl alcohol are 35°C, 56°C and 118°C respectively. Which one of the following correctly represents their boiling points in kelvin scale?
____________ is the change of solid state directly to vapour state without going through the ____________ state.
Why does the temperature of a substance remain constant during its melting point or boiling point?
Assertion (A): Burning of a candle is considered a physical as well as chemical change.
Reason (R): Melting of wax is a physical change melted wax turns into vapours and then bums which is a chemical change.
