Explore topic-wise InterviewSolutions in .

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.

If work done on a system is 20 J and a heat of 15 J is taken out, what is the change in internal energy of the system?(a) 5 J(b) 10 J(c) 20 J(d) 30 JI have been asked this question during an interview.The doubt is from Energy balance for Different type of systems topic in section Miscellaneous of Chemical Process Calculation

Answer»
52.

If the block is initially at a height of 2 m and with zero velocity. What is the maximum velocity it can gain?(a) 2.26(b) 4.26(c) 6.26(d) 8.26The question was asked during an internship interview.I'd like to ask this question from Energy Conservation topic in division Miscellaneous of Chemical Process Calculation

Answer»

The CORRECT OPTION is (C) 6.26

To ELABORATE: 1/2 mv2 = MGH.

53.

The total energy of the block _________ in every operation.(a) Increases(b) Decreases(c) Remains constant(d) None of the mentionedThis question was posed to me during an interview.Query is from Energy Conservation in section Miscellaneous of Chemical Process Calculation

Answer»

Right CHOICE is (C) REMAINS constant

Easiest EXPLANATION: The total energy of the block constant in every operation.

54.

Mechanical form of energy is(a) Work(b) Kinetic energy(c) Potential energy(d) All of the mentionedI had been asked this question in class test.My enquiry is from The Mechanical Energy balance topic in chapter Miscellaneous of Chemical Process Calculation

Answer»

Right ANSWER is (d) All of the mentioned

Best EXPLANATION: WORK, Kinetic energy and POTENTIAL energy, all are the form of Mechanical energy.

55.

10 J of heat is supplied to a system and a work of 30 J performed on it. If 50 J of heat is removed from the system, which type of system is it?(a) Steady state(b) Unsteady state(c) Closed(d) None of the mentionedI got this question during an online interview.Question is taken from Energy balance for Different type of systems in portion Miscellaneous of Chemical Process Calculation

Answer»

The CORRECT answer is (B) UNSTEADY state

Easy EXPLANATION: ∆E is not equal to ZERO.

56.

Heat engine efficiency the actual ________ output from a process divided by the _______ input from a source.(a) Work, Heat(b) Heat, Work(c) Work, Work(d) Heat, HeatI had been asked this question in homework.The query is from The Mechanical Energy balance topic in portion Miscellaneous of Chemical Process Calculation

Answer»

The CORRECT CHOICE is (a) Work, Heat

For EXPLANATION: Heat engine efficiency the actual work output from a process divided by the heat input from a source.

57.

An idealized process in which changes occur under a differential imbalance in temperature, pressure etc. is called(a) Reversible process(b) Irreversible process(c) Ideal process(d) None of the mentionedThis question was posed to me in an online interview.My query is from The Mechanical Energy balance topic in section Miscellaneous of Chemical Process Calculation

Answer»

Correct choice is (a) REVERSIBLE process

Explanation: An idealized process in which CHANGES occur under a differential IMBALANCE in TEMPERATURE, pressure ETC. is called Reversible process.

58.

The negative of the heat of solution or mixing is(a) Heat of solution(b) Heat of dissolution(c) Heat of reaction(d) Heat of mixingThe question was posed to me in an online quiz.My question comes from Heats of Solutions and Mixing topic in portion Miscellaneous of Chemical Process Calculation

Answer» CORRECT choice is (B) Heat of DISSOLUTION

The best I can explain: The negative of the heat of solution or MIXING is Heat of dissolution.