Q. No.Which, among the following, is not a state function?
1. Internal energy
2. Free energy
3. Work
4. Enthalpy
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The enthalpy of formation of all elements in their standard state is-
| 1. | Unity | 2. | Zero |
| 3. | Less than zero | 4. | Different for each element |
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Thermodynamics is not concerned about:
| 1. | Energy changes involved in a chemical reaction. |
| 2. | The extent to which a chemical reaction proceeds. |
| 3. | The rate at which a reaction proceeds. |
| 4. | The feasibility of a chemical reaction. |
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The amount of heat needed to raise the temperature of 60.0 g of aluminium from 35°C to 55°C would be:
(Molar heat capacity of Al is \(24\) \(J\) \(\text{mol}^{- 1}\) \(K^{- 1}\))
| 1. | \(1 . 07\) \(J\) | 2. | \(1 . 07\) \(kJ\) |
| 3. | \(106 . 7\) \(kJ\) | 4. | \(100 . 7\) \(kJ\) |
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The correct statement among the following is:
| 1. | The presence of reacting species in a covered beaker is an example of an open system. |
| 2. | There is an exchange of energy as well as matter between the system and the surroundings in a closed system. |
| 3. | The presence of reactants in a closed vessel made up of copper is an example of a closed system. |
| 4. | The presence of reactants in a thermos flask or any other closed insulated vessel is an example of a closed system. |
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If the volume of a gas is reduced to half from its original volume, then the specific heat will:
| 1. | Reduce to half | 2. | Be Doubled |
| 3. | Remain constant | 4. | Increase four times |
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Which among the following state functions is an extensive property of the system?
| 1. | Temperature | 2. | Volume |
| 3. | Refractive index | 4. | Viscosity |
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| Statement I. | Specific heat is an intensive property. |
| Statement II. | Heat capacity is an extensive property. |
| 1. | Statement I is correct; Statement II is correct. |
| 2. | Statement I is correct; Statement II is incorrect. |
| 3. | Statement I is incorrect; Statement II is correct. |
| 4. | Statement I is incorrect; Statement II is incorrect. |
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Assume each reaction is carried out in an open container. For which of the following reactions will
1.
2.
3.
4.
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Combustion of glucose takes place according to the equation,
,
Energy required for the production of 1.6 g of glucose is -
(Molecular mass of glucose = 180 g)
1. 0.064 kcal
2. 0.64 kcal
3. 6.4 kcal
4. 64 kcal
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