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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
What is the humidity at the point of intersection of the dew point curve and wet-bulb line?(a) Dry-bulb Humidity(b) Wet-bulb Humidity(c) Specific Humidity(d) None of the mentionedI have been asked this question in final exam.I want to ask this question from Applications of Humidity Chart topic in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» CORRECT OPTION is (a) Dry-bulb Humidity Best explanation: The humidity at the point of INTERSECTION of the dew point curve and wet-bulb line is CALLED the wet-bulb humidity. |
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| 52. |
What is the heat transferred from the system in the humidification process?(a) Positive(b) Negative(c) Zero(d) None of the mentionedI got this question during an online exam.My question is taken from Applications of Humidity Chart topic in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» Right ANSWER is (C) Zero |
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| 53. |
Which of the following is also called adiabatic cooling?(a) Humidification(b) Humidity(c) Humid temperature(d) None of the mentionedThe question was asked during an online interview.My question comes from Applications of Humidity Chart in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The CORRECT OPTION is (a) HUMIDIFICATION |
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| 54. |
To plot the web-bulb line one information is wet-bulb temperature, what can be the other information?(a) Relative humidity(b) Dry-bulb temperature(c) Humidity(d) All of the mentionedI had been asked this question in an online interview.My enquiry is from Applications of Humidity Chart in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The CORRECT choice is (d) All of the mentioned |
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| 55. |
Wet-bulb temperature is based on the equilibrium between rates of energy transfer to the bulb and which of the following?(a) Evaporation of water(b) Saturation of water(c) Freezing of water(d) None of the mentionedI got this question in an international level competition.I want to ask this question from Applications of Humidity Chart in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» CORRECT option is (a) Evaporation of water Explanation: Wet-bulb TEMPERATURE is based on the EQUILIBRIUM between rates of energy TRANSFER to the bulb and evaporation of water. |
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| 56. |
In the humidity chart, what does the horizontal axis represent?(a) Air temperature(b) Dry-Bulb temperature(c) Wet-Bulb temperature(d) None of the mentionedThe question was posed to me in examination.This is a very interesting question from Applications of Humidity Chart in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» Right option is (b) Dry-Bulb TEMPERATURE |
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| 57. |
Humidity chart relates which of the following balances?(a) Momentum and energy balance(b) Material and energy balance(c) Material and momentum balance(d) None of the mentionedThe question was asked at a job interview.This interesting question is from Applications of Humidity Chart topic in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» Correct CHOICE is (B) MATERIAL and energy BALANCE |
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| 58. |
What is the humid volume of the system at 300oF with humidity 30%?(a) 15.5 ft3/lb(b) 28.4 ft3/lb(c) 39.8 ft3/lb(d) 55.2 ft3/lbThe question was asked in class test.This key question is from Humidity (Psychrometric) Chart topic in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» RIGHT ANSWER is (b) 28.4 ft3/lb Easy explanation: V = (0.73*300 + 336)(1/29 + 0.3/18) = 28.4 ft3/lb. |
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| 59. |
Which of the following is the humidity chart?(a) Psychrometric chart(b) Psychometric chart(c) Psychological chart(d) None of the mentionedThis question was posed to me in examination.This is a very interesting question from Applications of Humidity Chart topic in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The CORRECT choice is (a) Psychrometric CHART |
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| 60. |
What is the humid volume of the system at 150oF with humidity 50%?(a) 12.4 ft3/lb(b) 19.5 ft3/lb(c) 27.7 ft3/lb(d) 36.1 ft3/lbI have been asked this question during an internship interview.I'm obligated to ask this question of Humidity (Psychrometric) Chart topic in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The CORRECT answer is (C) 27.7 ft3/lb |
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| 61. |
What is the humid volume of the system at 200oF with humidity 40%?(a) 14.2 ft3/lb(b) 23.4 ft3/lb(c) 29.5 ft3/lb(d) 31.6 ft3/lbThis question was addressed to me in exam.The origin of the question is Humidity (Psychrometric) Chart in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The CORRECT ANSWER is (d) 31.6 ft3/lb |
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| 62. |
What is the humid volume of the system at 100oF with humidity 20%?(a) 18.6 ft3/lb(b) 22.4 ft3/lb(c) 26.5 ft3/lb(d) 29.4 ft3/lbI had been asked this question in an interview.This key question is from Humidity (Psychrometric) Chart topic in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The CORRECT OPTION is (a) 18.6 ft3/lb |
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| 63. |
Which of the following is the summation of a volume of 1 Kg of dry air and the water vapor in the air?(a) Humid volume(b) Partial volume(c) Dry volume(d) None of the mentionedThis question was addressed to me in unit test.I'd like to ask this question from Humidity (Psychrometric) Chart in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The correct option is (a) HUMID volume |
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| 64. |
What is the humid heat of a mixture of air (CP = 10 J) with water vapor (CP = 15 J), if the humidity is 60%?(a) 10 J(b) 14 J(c) 19 J(d) 23 JThe question was posed to me in a job interview.This question is from Humidity (Psychrometric) Chart in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» RIGHT choice is (C) 19 J To explain: CS = 10 + 15*0.6 = 19 J. |
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| 65. |
What is the humid heat of a mixture of air (CP = 10 J) with water vapor (CP = 25 J), if the humidity is 20%?(a) 15 J(b) 20 J(c) 25 J(d) 30 JThe question was posed to me in quiz.My enquiry is from Humidity (Psychrometric) Chart in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The CORRECT option is (a) 15 J |
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| 66. |
What is the humid heat of a mixture of air (CP = 10 J) with water vapor (CP = 15 J), if the humidity is 40%?(a) 16 J(b) 20 J(c) 24 J(d) 32 JThe question was asked by my college director while I was bunking the class.Question is from Humidity (Psychrometric) Chart topic in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» RIGHT answer is (a) 16 J The best explanation: CS = 10 + 15*0.4 = 16 J. |
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| 67. |
What is the humid heat of a mixture of air (CP = 20 J) with water vapor (CP = 30 J), if the humidity is 40%?(a) 24 J(b) 32 J(c) 38 J(d) 44 JThe question was posed to me by my school principal while I was bunking the class.I want to ask this question from Humidity (Psychrometric) Chart topic in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» Right choice is (b) 32 J |
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| 68. |
What is the humid heat of a mixture of air (CP = 10 J) with water vapor (CP = 20 J), if the humidity is 25%?(a) 10 J(b) 15 J(c) 20 J(d) 25 JThe question was posed to me in homework.Asked question is from Humidity (Psychrometric) Chart in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» Right option is (B) 15 J |
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| 69. |
What is the specific humidity, if the mass of water is 10 g and mass of bone dry air is 20 g?(a) 10%(b) 30%(c) 50%(d) 80%This question was posed to me in final exam.My question is based upon Humidity (Psychrometric) Chart in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The correct choice is (C) 50% |
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| 70. |
What is the specific humidity, if moles of water are 4 and total moles are 5?(a) 20%(b) 80%(c) 200%(d) 400%I have been asked this question by my school principal while I was bunking the class.Asked question is from Humidity (Psychrometric) Chart in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» Correct option is (d) 400% |
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| 71. |
What is the specific humidity, if pressure of water is 2 atm and total pressure is 12 atm?(a) 20%(b) 40%(c) 50%(d) 80%This question was posed to me in my homework.This interesting question is from Humidity (Psychrometric) Chart topic in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The CORRECT CHOICE is (d) 80% |
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| 72. |
What is the specific humidity, if pressure of water is 5 atm and total pressure is 10 atm?(a) 25%(b) 50%(c) 75%(d) 100%I had been asked this question by my college director while I was bunking the class.This interesting question is from Humidity (Psychrometric) Chart in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» The CORRECT option is (d) 100% |
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| 73. |
What is the specific humidity, if the mass of water is 15 g and mass of bone dry air is 25 g?(a) 10%(b) 30%(c) 40%(d) 60%I had been asked this question in final exam.The origin of the question is Humidity (Psychrometric) Chart topic in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering |
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Answer» CORRECT CHOICE is (d) 60% EXPLANATION: Specific HUMIDITY = 15/25*100 = 60%. |
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