Which, among the following, is not a state function?

1. Internal energy

2. Free energy

3. Work

4. Enthalpy

Subtopic:  Thermodynamics' Properties and process |
 89%
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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
Subtopic:  Thermodynamics' Properties and process |
 80%
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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.
Subtopic:  Thermodynamics' Properties and process |
 72%
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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. \(100 . 7\) \(kJ\)
Subtopic:  Thermodynamics' Properties and process |
 67%
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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.

Subtopic:  Thermodynamics' Properties and process |
 71%
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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
Subtopic:  Classification of System, Extensive & Intensive Properties |
 81%
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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
Subtopic:  Classification of System, Extensive & Intensive Properties |
 80%
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Select the correct option based on the statements given below:
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.
Subtopic:  Classification of System, Extensive & Intensive Properties |
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Assume each reaction is carried out in an open container. For which of the following reactions will H be equal to U?

1. PCl3(g) PCl3(g) +Cl2(g) 

2. 2CO(g) +O2(g) 2CO2(g) 

3. H2(g) +Br2(g) 2HBr(g)

4. C(s) +2H2O(g) 2H2(g) +CO2(g)

Subtopic:  Enthalpy & Internal energy |
 89%
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Combustion of glucose takes place according to the equation,

C6H12O6+6O26CO2+6H2O H = -72 K cal

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

Subtopic:  Enthalpy & Internal energy |
 82%
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