Chemical Engineering Thermodynamics

121. Enthalpy of a gas depends upon its

1. Temperature
2. Mass
3. Volume
4. Pressure

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122. Entropy change for an irreversible isolated system is

1. ∞
2. 0
3. < 0
4. > 0

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123. Entropy change for an irreversible process taking system and surrounding together is

1. 0
2. > 0
3. < 0
4. None of these

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124. Entropy change in case of reversible adiabatic process is

1. Minimum
2. Zero
3. Maximum
4. Indeterminate

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125. Entropy change of mixing two liquid substances depends upon the

1. Molar concentration
2. Quantity (i.e. number of moles)
3. Both (A) and (B)
4. Neither (A) nor (B)

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126. Entropy change of the reaction, H₂O (liquid) → H₂O (gas), is termed as the enthalpy of

1. Solution
2. Vaporisation
3. Formation
4. Sublimation

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127. Entropy is a measure of the _________ of a system.

1. Disorder
2. Orderly behaviour
3. Temperature changes only
4. None of these

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128. Entropy is a/an

1. State function
2. Macroscopic property
3. Extensive property
4. None of these

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129. Entropy of a substance remains constant during a/an _________ change.

1. Reversible isothermal
2. Irreversible isothermal
3. Reversible adiabatic
4. None of these

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130. Entropy of an ideal gas depends upon its

1. Pressure
2. Temperature
3. Both (A) & (B)
4. Neither (A) nor (B)

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