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प्रश्न
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?
विकल्प
306 K, 329 K, 391 K
308 K, 329 K, 392 K
308 K, 329 K, 391 K
329 K, 392 K, 308 K
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उत्तर
308 K, 329 K, 391 K
35°C = 273 + 35 = 308 K
56°C = 273 + 56 = 329 K
118°C = 273 + 118 = 391 K
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संबंधित प्रश्न
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 |
What is the physical state of water at 100°C.
By the process of Heating of water, ______ is obtained.
Which condition out of the following will increase the evaporation of water?
Alka was making tea in a kettle. Suddenly she felt intense heat from the puff of steam gushing out of the spout of the kettle. She wondered whether the temperature of the steam was higher than that of the water boiling in the kettle. Comment.
Conversion of solid to vapour is called sublimation. Name the term used to denote the conversion of vapour to solid.
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.
A liquid changes into a gas at a constant temperature known as its ______.
