Q381
Open questionPick out the undesirable property for a good refrigerant.
Select an option to see the answer and solution.
Chemical Engineering · all questionsChemical Engineering Thermodynamics
Chemical Engineering Thermodynamics
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
525
Questions
20/27
Page
Pick an option on a question to see the right answer and solution.
Q382
Open questionA solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. Specific heat of block material is 0.4 kJ.kg-1.K-1. Ignoring the effect of expansion and contraction and also the heat capacity to tank, the total entropy change in kJ.kg-1.K-1 is
Select an option to see the answer and solution.
Q383
Open questionIsotherm on an enthalpy-concentration diagram, for an ideal solution will be a
Select an option to see the answer and solution.
Q384
Open questionChoose the condition that must be specified in order to liquify CO2 (triple point for CO2 is -57°C and 5.2 atm).
Select an option to see the answer and solution.
Q385
Open questionWhen a system is in equilibrium for all possible processes, the differential or finite change of entropy is
Select an option to see the answer and solution.
Q386
Open questionConsider the reaction, C + O2 ⇋ CO2; ΔH = -94 kcal. What will be the value of ΔH for the reaction CO2 → C + O2?
Select an option to see the answer and solution.
Q387
Open questionIn a working refrigerator, the value of COP is always
Select an option to see the answer and solution.
Q388
Open questionWhich of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system?
Select an option to see the answer and solution.
Q389
Open questionWhich is not constant for an ideal gas?
Select an option to see the answer and solution.
Q390
Open questionHeat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of
Select an option to see the answer and solution.
Q391
Open questionAbsorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of
Select an option to see the answer and solution.
Q392
Open questionWork done may be calculated by the expression ∫p dA for __________ processes.
Select an option to see the answer and solution.
Q393
Open questionWith increase in temperature, the atomic heat capacities of all solid elements
Select an option to see the answer and solution.
Q394
Open questionWhen a gas is subjected to adiabatic expansion, it gets cooled due to
Select an option to see the answer and solution.
Q395
Open questionPick out the wrong statement.
Select an option to see the answer and solution.
Q396
Open questionGeneration of heat by friction is an example of a/an __________ change.
Select an option to see the answer and solution.
Q397
Open questionRotary lime kiln is an example of a/an __________ system.
Select an option to see the answer and solution.
Q398
Open questionSound waves propagation in air exemplifies an __________ process.
Select an option to see the answer and solution.
Q399
Open questionWhich of the following exemplifies an adiabatic process?
Select an option to see the answer and solution.
Q400
Open question4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is
Select an option to see the answer and solution.