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Published on: 13/05/2022
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Questions + Answers key
Take MCQ Science Test1.
What is co-efficient of apparent expansion?
2.
Distinguish between ideal gas and real gas.
3.
State Boyle’s law
4.
What is co-efficient of cubical expansion?
5.
Distinguish between linear, Arial or superficial expansion.
1.
(i) Co-efficient of apparent expansion is defined as the ratio of the apparent rise in the volume of the liquid per degree rise in temperature to its unit volume.
(ii) Its SI unit is K-1.
2.
| S. No |
Ideal gas |
Real gas |
|---|---|---|
| (i) | If the atoms or molecules of a gas do not interact with each other, then the gas is said to be an ideal gas or a perfect gas. | If the molecules or atoms of a gas interact with each other with a definite amount of intermolecular or interatomic force of attraction, then the gases are said to be a real gases. |
3.
When the temperature of a gas is kept constant, the volume of a fixed mass of gas is inversely proportional to its pressure. \(\mathrm{P} \alpha \frac{1}{\mathrm{~V}}\)
4.
(i) The ratio of increase in volume of the body per degree rise in temperature to its unit volume is called as co-efficient of cubical expansion.
(ii) SI unit is K-1.
(iii) Co - efficient of cubical expansion can be expressed as \(\frac{\Delta V}{V_{o}}=\alpha_{v} \Delta T\)
5.
| Linear Expression | Arial Expansion | Superficial expansion | |
|---|---|---|---|
| (i) | When a body is heated or cooled, the length of the body changed due to change in its temperature, then the expansion is called as linear expansion. |
If there is an increase in the area of a solid object due to heating, then the expansion is called as superficial expansion. |
If there is an increase in the volume of a solid due to heating, then the expansion is called as cubical expansion. |
| (ii) | The ratio of increase in length of the body per degree rise in temperature to its unit length is called as the co-efficient of linear expansion. |
The ratio of the increase in ratio of the body per degree rise in temperature to its unit area is called as co- efficient of superficial expansion. |
The ratio of the increase in volume of the body per degree rise in temperature to its unit volume is called as co-efficient of cubical expansion. |
| (iii) | This is otherwise called as longitudinal expansion. |
This is otherwise called as Areal expansion. |
This is otherwise called as volumetric expansion. |
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
