InterviewSolution
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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.
| 1. |
The density of liquid A is 1.6 g cm-3 and its height h(A) = 16.9 cm, then the density of oil B of height h(B) = 30 cm in the U-tube is about(a) 0.90 g/cm3(b) 1.12 g/cm3(c) 2.24 g/cm3(d) 3.54 g/cm3I have been asked this question in an interview for internship.The query is from Pressure and Hydrostatic Head-II in section Introductory Concepts of Chemical Process Calculation |
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Answer» The correct CHOICE is (a) 0.90 g/cm3 |
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| 2. |
If a pressure of 400 Pa acts on 20 m2 area, what is the value force?(a) 2 KN(b) 4 KN(c) 6KN(d) 8KNI had been asked this question by my school teacher while I was bunking the class.This is a very interesting question from Pressure and Hydrostatic Head-III in portion Introductory Concepts of Chemical Process Calculation |
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Answer» CORRECT OPTION is (d) 8KN Explanation: FORCE = PRESSURE*AREA. |
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| 3. |
760 mm Hg equals(a) 33.94 ft H2O(b) 22.56 ft H2O(c) 11.24 ft H2O(d) None of the mentionedThis question was posed to me in final exam.Question is taken from Pressure and Hydrostatic Head-III in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» CORRECT option is (a) 33.94 ft H2O Best explanation: 760 mm HG = 1 atm = 33.94 ft H2O. |
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| 4. |
What is the concentration of 44 grams of CO2 occupying 2 m3 volume?(a) 0.5 mole / m3(b) 0.4 mole / m3(c) 0.3 mole / m3(d) 0.2 mole / m3This question was addressed to me during an interview.My question comes from Concentration-II in portion Introductory Concepts of Chemical Process Calculation |
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Answer» CORRECT answer is (a) 0.5 MOLE / m3 To explain: CONCENTRATION = moles / Volume = 1/2. |
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| 5. |
What is the mass of the block?(a) 99.36 Kg(b) 9.996 Kg(c) 0.9936 Kg(d) None of the mentionedThe question was asked during an online exam.This is a very interesting question from Density and specific gravity-III in section Introductory Concepts of Chemical Process Calculation |
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Answer» RIGHT answer is (c) 0.9936 Kg The best explanation: Mass = DENSITY*VOLUME. |
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| 6. |
Volume of the petroleum products changes with temperature so __________ is used to measure specific gravity.(a) Density(b) Specific volume(c) API gravity(d) None of the mentionedThis question was posed to me in an international level competition.My question is from Density and specific gravity-III in division Introductory Concepts of Chemical Process Calculation |
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Answer» Correct option is (c) API gravity |
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| 7. |
The specific gravity of water is taken as(a) 0.01(b) 0.1(c) 1(d) 10I had been asked this question by my school teacher while I was bunking the class.This intriguing question originated from Density and specific gravity-II in portion Introductory Concepts of Chemical Process Calculation |
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Answer» Correct answer is (c) 1 |
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| 8. |
What is weight percentage of Ne?(a) 0.225(b) 0.425(c) 0.625(d) 0.825This question was posed to me in an online quiz.My question comes from Mole and Molecular Weight in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» The correct answer is (C) 0.625 |
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| 9. |
What is the concentration of 560 gm H2SO4 solution in 486 mL solution?(a) 11.75 mole / L(b) 1.152 gm / mL(c) Both a and b(d) Only bI got this question in an interview for job.The origin of the question is Concentration-II topic in division Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT option is (C) Both a and b |
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| 10. |
What is the mole fraction of Ne?(a) 0.2(b) 0.4(c) 0.6(d) 0.8I had been asked this question in an interview.I want to ask this question from Mole and Molecular Weight in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» Correct answer is (b) 0.4 |
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| 11. |
What are the number moles of Oxgen present there in the bucket?(a) 1(b) 2(c) 4(d) 6I had been asked this question during an interview.This interesting question is from Mole and Molecular Weight in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» Right choice is (a) 1 |
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| 12. |
What is the percentage by weight of Nitrogen in NH3?(a) 82.35(b) 83.40(c) 88.12(d) 94.56The question was posed to me during an online interview.This interesting question is from Mole and Molecular Weight-V topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» Right ANSWER is (a) 82.35 |
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| 13. |
_____________ is the number of moles of a particular substance in a mixtures or solution divided by the total number of moles present in the mixture or solution.(a) Molecular weight(b) Average molecular weight(c) Atomic weight(d) Mole fractionI had been asked this question by my college director while I was bunking the class.The above asked question is from Mole and Molecular Weight-II topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» Right ANSWER is (d) Mole fraction |
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| 14. |
Temperature can`t be expressed as?(a) Celsius(b) Fahrenheit(c) Rankine(d) None of the mentionedThe question was asked during an interview for a job.Query is from Temperature topic in section Introductory Concepts of Chemical Process Calculation |
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Answer» The correct OPTION is (d) NONE of the mentioned |
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| 15. |
Find out the correct statement(a) Pabsolute = Pgauge – Patmospheric(b) Pvacuum = Patmospheric + Pabsolute(c) Both and b are incorrect(d) Both and b are correctI have been asked this question during a job interview.The question is from Pressure and Hydrostatic Head-I topic in division Introductory Concepts of Chemical Process Calculation |
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Answer» Correct choice is (c) Both and B are incorrect |
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| 16. |
___________ is measured in Hydrometer scale.(a) API gravity(b) Specific gravity(c) Density(d) None of the mentionedThis question was posed to me in unit test.Question is taken from Density and specific gravity-III topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» Correct OPTION is (a) API gravity |
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| 17. |
An object has specific gravity greater than 1. When it is kept on the surface of water, the object would(a) Sink(b) Float(c) Half part of the object floats(d) None of the mentionedThe question was asked in class test.I want to ask this question from Density and specific gravity-II topic in section Introductory Concepts of Chemical Process Calculation |
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Answer» The correct ANSWER is (a) Sink |
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| 18. |
Relative molecular masses can be calculated(a) By the relative atomic mass(b) By the relative mass of a covalent compound(c) if individual relative atomic masses are added(d) By adding relative compound massesI have been asked this question by my college professor while I was bunking the class.Enquiry is from Mole and Molecular Weight-V topic in section Introductory Concepts of Chemical Process Calculation |
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Answer» Correct ANSWER is (C) if individual RELATIVE atomic masses are added |
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| 19. |
What is the weight percentage of NaOH?(a) 14.67(b) 15.67(c) 16.67(d) 17.67This question was addressed to me in an online quiz.This key question is from Mole and Molecular Weight-IV in portion Introductory Concepts of Chemical Process Calculation |
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Answer» The correct option is (c) 16.67 |
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| 20. |
56 in Hg equals(a) 13.76 psia(b) 27.52 psia(c) 28.56 psia(d) 57.12 psiaI had been asked this question during an internship interview.My question is from Pressure and Hydrostatic Head-III in portion Introductory Concepts of Chemical Process Calculation |
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Answer» Correct CHOICE is (B) 27.52 PSIA |
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| 21. |
What is the molar flow rate of sodium solution if 80 gms of solution is collected in 20 seconds.(a) 0.1(b) 0.2(c) 0.3(d) 0.4I got this question in an interview for job.I would like to ask this question from Flow Rate topic in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT ANSWER is (a) 0.1 |
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| 22. |
What is the mole fraction of Cl?(a) 0.2(b) 0.4(c) 0.6(d) 0.8This question was posed to me at a job interview.Asked question is from Concentration-II topic in section Introductory Concepts of Chemical Process Calculation |
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Answer» Correct ANSWER is (a) 0.2 |
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| 23. |
What is the weight fraction of N2 in a gas when it is liquefied? The gas contains 400 ppm of N2 in CO2.(a) 2.54×10-4(b) 3.54×10-4(c) 4.54×10-4(d) 5.54×10-4This question was posed to me in final exam.My question is based upon Concentration-I topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» The correct ANSWER is (a) 2.54×10-4 |
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| 24. |
The reference material or time selected to use in making the calculation in a problem is called(a) Basis(b) Dimension(c) Unit(d) None of the mentionedThe question was asked at a job interview.My enquiry is from Choosing a Basis topic in section Introductory Concepts of Chemical Process Calculation |
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Answer» Correct choice is (a) Basis |
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| 25. |
The concentration of 0.02 M H2SO4 molecules in a solution where the ionization of H2SO4 is 30%.(a) 0.014(b) 0.003(c) 0.002(d) 0.005The question was asked in class test.Question is taken from Concentration-I topic in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT choice is (a) 0.014 |
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| 26. |
What is weight percentage of He?(a) 0.0225(b) 0.0425(c) 0.0625(d) 0.0825This question was addressed to me in semester exam.The query is from Mole and Molecular Weight topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» Correct ANSWER is (c) 0.0625 |
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| 27. |
What is the mole fraction of SO2?(a) 0.2(b) 0.4(c) 0.6(d) 0.8I had been asked this question at a job interview.Enquiry is from Mole and Molecular Weight in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT CHOICE is (a) 0.2 |
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| 28. |
What are the number moles of Oxgen present there in the cylinder?(a) 1(b) 2(c) 3(d) 4I had been asked this question at a job interview.This key question is from Mole and Molecular Weight topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» Right OPTION is (C) 3 |
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| 29. |
How many moles of H2SO4 are there in the bucket?(a) 1.44(b) 1.88(c) 2.44(d) 2.88The question was asked in final exam.I would like to ask this question from Mole and Molecular Weight-IV topic in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT ANSWER is (B) 1.88 |
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| 30. |
A static column of height h is filled with a liquid of density D. What is the static pressure at the bottom if the column is placed in open.(a) P* + Dgh(b) Dgh(c) P*(d) None of the mentionedI got this question in examination.The doubt is from Pressure and Hydrostatic Head-I in section Introductory Concepts of Chemical Process Calculation |
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Answer» RIGHT CHOICE is (a) P* + DGH To explain I would say: Static pressure at the BOTTOM = P* + Dgh. |
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| 31. |
_____________ is used for the measurement of gauge pressure.(a) Manometer(b) Barometer(c) Hydrometer(d) None of the mentionedI have been asked this question in a job interview.This interesting question is from Pressure and Hydrostatic Head-II topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» CORRECT ANSWER is (a) Manometer To elaborate: Manometer is USED for the MEASUREMENT of gauge pressure. |
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| 32. |
Densities for ________ and ________do not change significantly at ordinary conditions with pressure.(a) Gas, liquids(b) Liquids, solids(c) Solids, gas(d) None of the mentionedI got this question in an online interview.My doubt stems from Density and specific gravity-I in division Introductory Concepts of Chemical Process Calculation |
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Answer» Right answer is (B) Liquids, solids |
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| 33. |
What is the concentration (% m/v) of the solution that contains 20.0 g NaCl in 800.0 mL solution?(a) 5.00%(b) 2.00%(c) 0.200%(d) 2.50%This question was posed to me by my school principal while I was bunking the class.The query is from Concentration-I in section Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT CHOICE is (d) 2.50% |
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| 34. |
How many moles of SO2 are there in the cylinder?(a) 1(b) 2(c) 4(d) 6This question was posed to me in a national level competition.Enquiry is from Mole and Molecular Weight in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» Correct option is (a) 1 |
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| 35. |
Select the correct statement(a) 1 mole of SO2 and 64 g of Ethyl Chloride have same number of moles(b) 1 mole of SO2 and 64 g of Ethyl Chloride don`t have same molecular weights(c) Both a and b(d) Neither a nor bI have been asked this question in unit test.This interesting question is from Mole and Molecular Weight-III topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT choice is (a) 1 mole of SO2 and 64 g of Ethyl CHLORIDE have same number of moles |
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| 36. |
A bucket is placed in vacuum that contains a 14 kg/m3 density fluid. The bucket is filled with a height of 5 m. What is the static pressure at the bottom of the bucket?(a) 484 Pa(b) 686 Pa(c) 888 Pa(d) 1000 PaI had been asked this question in a job interview.My question is from Pressure and Hydrostatic Head-I in division Introductory Concepts of Chemical Process Calculation |
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Answer» The correct choice is (B) 686 Pa |
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| 37. |
Pressure can`t be expressed as(a) N/m2(b) Pa/m2(c) atm(d) mm of HgI got this question during an interview.Question is taken from Pressure and Hydrostatic Head-I in division Introductory Concepts of Chemical Process Calculation |
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Answer» The correct ANSWER is (b) PA/m2 |
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| 38. |
Change in temperature on Fahrenheit scale is?(a) 1.389 ˚F(b) 37.72˚F(c) 460 ˚F(d) None of the mentionedThe question was posed to me in exam.The question is from Temperature in division Introductory Concepts of Chemical Process Calculation |
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Answer» CORRECT ANSWER is (a) 1.389 ˚F Explanation: ∆˚C = 1.8 ∆˚F. |
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| 39. |
An object is once immersed in oil and once in water. The loss in weight would be(a) More in water(b) More in oil(c) Equal in both oil and water(d) None of the mentionedI have been asked this question in an interview for job.My question is based upon Density and specific gravity-III topic in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT CHOICE is (b) More in oil |
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| 40. |
Boiling temperature of water in Fahrenheit scale is(a) 112(b) 213(c) 212(d) 121I got this question during an interview.This question is from Temperature topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» Correct CHOICE is (c) 212 |
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| 41. |
How many moles of H2 are there in the bucket?(a) 3(b) 6(c) 10(d) 12The question was posed to me by my school teacher while I was bunking the class.This key question is from Mole and Molecular Weight in division Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT choice is (C) 10 |
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| 42. |
What is the mole fraction of Na atom in NaOH molecule?(a) 0.33(b) 0.66(c) 0.575(d) 1.150The question was posed to me in exam.This intriguing question comes from Choosing a Basis topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT option is (C) 0.575 |
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| 43. |
The quantity of matter present in an object is(a) Mass(b) Molecular weight(c) Mole(d) Molar massI got this question by my college director while I was bunking the class.My doubt is from Mole and Molecular Weight-V topic in division Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT option is (a) Mass |
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| 44. |
How many moles of Sulfur are there in the cylinder?(a) 1(b) 2(c) 4(d) 6The question was asked during an online exam.My enquiry is from Mole and Molecular Weight in section Introductory Concepts of Chemical Process Calculation |
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Answer» RIGHT ANSWER is (a) 1 Easy EXPLANATION: Number of moles of SULFUR = No. of moles of SO2. |
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| 45. |
What is a mole?(a) A mole is found in a certain number of cm3 of one substance or another.(b) A mole is the sum of atomic weights.(c) A mole is the number of molecules in one gram of a substance.(d) None of the mentionedThis question was addressed to me in final exam.This interesting question is from Mole and Molecular Weight-III in section Introductory Concepts of Chemical Process Calculation |
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Answer» Correct CHOICE is (d) None of the mentioned |
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| 46. |
40 psia equals(a) 175.64 kPa(b) 275.64 kPa(c) 375.64 kPa(d) 475.64 kPaThis question was addressed to me in final exam.Asked question is from Pressure and Hydrostatic Head-III topic in portion Introductory Concepts of Chemical Process Calculation |
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Answer» The correct ANSWER is (b) 275.64 kPa |
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| 47. |
A positive pressure less than atmospheric pressure is(a) Absolute pressure(b) Gauge pressure(c) Static pressure(d) VacuumThe question was asked at a job interview.My enquiry is from Pressure and Hydrostatic Head-II in chapter Introductory Concepts of Chemical Process Calculation |
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Answer» Correct CHOICE is (d) Vacuum |
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| 48. |
The normal force per unit area that a fluid exerts on a surface is called(a) Normal Force(b) Pressure(c) Gauge pressure(d) None of the mentionedThis question was addressed to me in examination.I'm obligated to ask this question of Pressure and Hydrostatic Head-I topic in section Introductory Concepts of Chemical Process Calculation |
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Answer» The correct CHOICE is (b) Pressure |
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| 49. |
The quantity of solute per unit volume is __________(a) Mole(b) Concentration(c) Density(d) None of the mentionedThe question was asked at a job interview.Question is from Concentration-I in portion Introductory Concepts of Chemical Process Calculation |
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Answer» The CORRECT answer is (B) Concentration |
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| 50. |
What is the weight percentage of H2O?(a) 19.44(b) 14.42(c) 12.56(d) 10.28The question was posed to me in my homework.Question is taken from Mole and Molecular Weight-IV topic in section Introductory Concepts of Chemical Process Calculation |
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Answer» CORRECT ANSWER is (a) 19.44 The explanation: Weight PERCENTAGE = MASS of the component / Total mass. |
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