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प्रश्न
Find the odd one out and give its explanation.
पर्याय
cal/g
cal/g °C
kcal/kg °C
erg/g °C
उत्तर
cal/g
Explanation-
cal/g is a unit of specific latent heat while others are units of specific heat.
APPEARS IN
संबंधित प्रश्न
State any two measures to minimize the impact of global warming.
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 requires more heat: 1 g ice at 0℃ or 1 g water at 0℃ to raise its temperature to 10℃?
- Explain your answer in part (a).
Calculate the total amount of heat energy required to convert 100 g of ice at −10℃ completely into water at 100℃. Specific heat capacity of ice = 2.1 J g-1 K-1, specific heat capacity of water = 4.2 J g-1K-1, specific latent heat of ice = 336 J g-1.
Define the following terms:
(i) Latent heat,
(ii) Latent heat of fusion of ice.
When 1 g of ice at 0 °C melts to form 1 g of water at 0 °C then, is the latent heat absorbed by the ice or given out by it?
Define the term ‘specific latent heat of fusion’ of a substance.
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?
Derive an expression for the amount of heat given out or taken up, when its temperature falls or rises by t°C.
What observation you will record and how will you determine the specific latent heat of fusion of ice?
If pressure increases, the melting point of a substance ______.
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 the name.
The phase in which solid substances are converted into liquid.
Define specific latent heat capacity
Give some practical applications of specific latent heat of ice.
