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प्रश्न
1 kg of dry air at a temperature of 40 °C can hold a maximum of 49 g of water vapour.
विकल्प
Right
Wrong
उत्तर
1 kg of dry air at a temperature of 40 °C can hold a maximum of 49 g of water vapour- Right
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संबंधित प्रश्न
What is the Greenhouse effect?
1 g ice of 0℃ melts to form 1 g water at 0℃. State whether the latent heat is absorbed or given out by ice.
Which has more heat: 1 g ice at 0℃ or 1g water 0℃? Give reason.
What is meant by latent heat? How will the state of matter transform if latent heat is given off?
Explain the following temperature vs time graph.
What do you mean by the statement?
'The specific latent heat capacity of fusion of ice is 336 J per g'?
The specific latent heat of vaporisation of steam is 2260 J/g. Comment on this.
Why do we feel much comfortable when we sit under a moving fan especially when our body is sweating?
Explain, why no tracks are left on the ice during ice skating?
Why does evaporation causes cooling and why is water used in hot water bottles?
Explain the meaning of greenhouse effect.
State two advantages of the high specific latent heat capacity of steam, which is about 226 × 104 J/kg?
If pressure increases, the melting point of a substance ______.
How fog is formed?
Match the columns.
| Column A | Column B |
| 1) Specific latent heat of fusion | a) Air saturated with vapour |
| 2) Specific latent heat of vaporisation | b) Solid converts into liquid |
| 3) Dew point temperature | c) liquid converts into gas |
Write scientific reason.
Use a pressure cooker to cook food in cold air.
Write scientific reason.
The bottom of some steel utensils used for cooking is copper.
Calculate the amount of heat required to convert 200g of ice at 0°C into the water at 0°C Specific latent heat of fusion of ice = 336 Jg-1
Observe the following graph and answer the following questions:
- What does the graph represent?
- What does the line AB represent?
- What does the line BC represent?
