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प्रश्न
Write the name.
The phase in which solid substances are converted into liquid.
उत्तर
The phase in which solid substances are converted into liquid- Melting
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संबंधित प्रश्न
State two factors upon which the rate of emission of thermions depends.
State any two measures to minimize the impact of global warming.
Write the approximate value of specific latent heat of ice.
Which has more heat: 1 g ice at 0℃ or 1g water 0℃? Give reason.
Explain the following temperature vs time graph.
When a liquid is getting converted into solid, the latent heat is ………………………………
Define the following terms:
(i) Specific latent heat,
(ii) Specific latent heat of fusion.
Explain why water is used in hot water bottles for fomentation and also as a universal coolant.
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?
State two advantages of the high specific latent heat capacity of steam, which is about 226 × 104 J/kg?
Find the odd one out and give its explanation.
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 |
Match the columns.
| Column A | Column B |
| 1) Absolute humidity | a) J or cal |
| 2) Latent heat | b) J/kg °C |
| 3) Specific heat capacity | c) kJ/kg |
| 4) Heat | d) no unit |
| e) kg/m3 |
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.
Define specific latent heat capacity
Specific latent heat L = ______.
Calculate the total amount of heat energy required to melt 200 g of ice at 0°C to water at 100°C. (Specific latent heat of ice = 336 Jg-1, specific heat capacity of water = 4.2 Jg-1 °C-1)
