Process Calculations Quiz

PC Quiz – 1

Q 1: lb equals to

A) 0.453 kg
B) 2.2 kg
C) 1 kg
D) None of these

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Q 2: Convert 25 degree Celsius to Kelvin

A) 300 K
B) 298 K
C) 25 K
D) None of these

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Q 3: Can we add 10 kg and 1 h

A) Yes
B) No

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Q 4: Which of the following does the purge stream come from?

A) Feed stream
B) Product stream
C) Recycle stream
D) None

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Q 5: A bypass stream does not go through which of the following?

A) Mixer
B) Process
C) Separator
D) None

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Q 6: Molarity is defined as

A) Mass of solute present in 1 liter of solution
B) No. of moles of solute present in 1 liter of solution
C) No. of moles of solute present in 1 liter of solvent
D) None

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Q 7: Which of the following is correct?

A) Molarity = n-factor × Normality
B) Normality = n-factor/ Molarity
C) Normality = n-factor × Molarity
D) None

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Q 8: Which of the following is correct about mass fraction?

A) always more than 1
B) always less than 1

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Q 9: “Total pressure of the gas mixture is the sum of individual pressures”. Which law is reflected in this statement?

A) Amagat’s law
B) Raoult’s law
C) Dalton’s law
D) Henry’s law

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Q 10: Under what conditions do real gases obey ideal gas behavior?

A) Low P & High T
B) Low P & Low T
C) High P & High T
D) High P & Low T

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Q 11: Concentration of a solution expressed in terms of ____________ is independent of temperature.

A) Molarity
B) Normality
C) Molality
D) None of these

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Q 12: A mole of a compound contains

A) one molecule
B) one atom
C) 6.023\times10^{23}\;molecules
D) 22.4\times10^3\;molecules

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Q 13: Purging operation is performed on recycle streams for

A) Increasing yield
B) reducing accumulation of inerts
C) conserving heat
D) improving efficiency

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Q 14: Percent excess is equal to

A) excess amount×100/theoretical required amount
B) excess amount/theoretical required amount
C) theoretical required amount/excess amount
D) theoretical required amount×100/excess amount

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Q 15: How many sulfur atoms are in 25 molecules of C₄H₄S₂

A) 50
B) 40
C) 25
D) 10

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Q 16: Which one is false about the calorific value

A) Total amount of heat released when a unit mass of fuel is completely burnt in the presence of air
B) The calorific value of fuel is always positive
C) The units may be expressed as kcal/kg or kJ/kg
D) None

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Q 17: Gross and net calorific value of a fuel will be the same

A) if its ash content is zero.
B) if its carbon content is very low.
C) under no circumstances.
D) if its hydrogen/hydrogen compound content is zero

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Q 18: Presence of __________ in a dry gaseous fuel does not contribute to its calorific value.

A) sulphur
B) oxygen
C) hydrogen
D) carbon

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Q 19: Combustion reaction of fuels is a/an __________ reaction.

A) exothermic
B) endothermic
C) auto catalytic
D) none

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Q 20: Proximate analysis of fuel is determination of the percentage of ____________________?

A) carbon, hydrogen, nitrogen, sulphur, moisture
B) fixed carbon, ash, volatile matter, moisture
C) higher calorific value
D) lower calorific value

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