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प्रश्न
Find the odd one out:
विकल्प
Conduction
Convection
Radiation
Expansion
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उत्तर
Expansion
Explanation:
Conduction, convection, and radiation are all ways of heat transport, whereas material expansion is a property.
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संबंधित प्रश्न
Define heat capacity and state its SI unit.
Why do the farmers fill their fields with water on a cold winter night?
Give one example where high specific heat capacity of water is used as cooling purposes?
Ice cream appears colder to the mouth than water at 0℃. Give reason.
Why do bottled soft drinks get cooled, more quickly by the ice cubes than by the iced water, both at 0℃?
It is generally cold after a hail-storm then during and before the hail storm. Give reason.
Name two green house gases ?
Study the following procedure and answer the questions below:
1. Take 3 spheres of iron, copper and lead of equal mass.
2. Put all the 3 spheres in boiling water in a beaker for some time.
3. Take 3 spheres out of the water. Put them immediately on a thick slab of wax.
4. Note, the depth that each sphere goes into the wax.
i) Which property of substance can be studied with this procedure?
ii) Describe that property in minimum words.
iii) Explain the rule of heat exchange with this property.
Define heat capacity.
A piece of iron of mass 2.0 kg has a heat capacity of 966 J K-1. Find its specific heat capacity in S.I unit.
Name the substance which has maximum specific heat capacity.
Write two advantages of high specific heat capacity of water.
A. hot solid of mass 60 g at 100°C is placed in 150 g of water at 20° C. The final steady temperature recorded is 25°C. Calculate the specific heat capacity of the solid. [Specific heat capacity of water = 4200 J kg-1 °C-1]
Solve the following problem.
Specific latent heat of vaporization of water is 2.26 × 106 J/kg. Calculate the energy needed to change 5.0 g of water into steam at 100 ºC.
All metals have the same specific heat capacity.
What is specific heat capacity?
If 'f' is the number of degrees of freedom of a molecule of a gas and ratio of molar specific heats of a gas, ϒ = 1 + `2/"f"` where ϒ = Cp/Cv. The ratio of 'ϒ' for monoatomic gas to 'ϒ' for (rigid) f diatomic gas is ______.
Specific heat capacity C = ______.
Observe the following diagram and answer the questions given below:
Specific heat capacity of metals
- Which element has maximum specific heat capacity? Justify.
- Which element has minimum specific heat capacity? Justify.
- Define specific heat of object.
