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

1. Internal energy

2. Free energy

3. Work

4. Enthalpy

Subtopic:  Thermodynamics' Properties and process |
 88%
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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 |
 79%
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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 |
 71%
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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 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 |
 70%
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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 |
 80%
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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 |
 79%
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Select the correct option based on statements below:
Assertion (A):  Specific heat is an intensive property.
Reason (R):  Heat capacity is an extensive property.
 
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Classification of System, Extensive & Intensive Properties |
 71%
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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 |
 81%
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