59 + Mcqs in Recycle, Bypass, Purge & Gases in Chemical Engineering Page 1 McqOptions

1.	A gas mixture with 50% H2 at the rate F is passed through a reactor and it produced a gas mixture with 80% H2 at the rate 15 liter/s, what is the value of F?
A.	5 liter/s
B.	8 liter/s
C.	15 liter/s
D.	24 liter/s
Answer» E.

Discussion

2.	N2 with pressure 10 atm and H2 with pressure 30 atm, both with volume 10 liter at 27oC are passed into a reactor, how many moles NH3 is produced?
A.	4
B.	8
C.	12
D.	16
Answer» C. 12

Discussion

3.	CO with pressure 10 atm at 27oC is passed through a reactor with O2, what is the pressure of CO2 produced if 60% CO reacted?
A.	2 atm
B.	6 atm
C.	10 atm
D.	14 atm
Answer» C. 10 atm

Discussion

4.	H2 at 27oC with pressure 10 atm and volume 10 liter is passed through a reactor with 6 moles of oxygen, if the limiting reagent reacts completely, how many moles of oxygen is left unreacted?
A.	1
B.	2
C.	4
D.	6
Answer» D. 6

Discussion

5.	A gas mixture with 20% O2 with pressure 100 Pa at 27oC at the rate 50 liter/s is passed through a reactor and products a gas mixture with 40% O2 with pressure 25 Pa at 27oC, what is the rate of product?
A.	50 liter/s
B.	100 liter/s
C.	200 liter/s
D.	400 liter/s
Answer» C. 200 liter/s

Discussion

6.	CH4 with pressure 10 atm and volume 5 liter at 27oC is passed into a reactor with 50% excess oxygen, how many moles of oxygen is left in the products?
A.	2
B.	4
C.	6
D.	8
Answer» B. 4

Discussion

7.	A container has two gases at 27oC, one with molar volume 6 L/mole, another with molar volume 3 L/mole, what is the total pressure of the container?
A.	6.9 atm
B.	8.5 atm
C.	12.3 atm
D.	15.8 atm
Answer» D. 15.8 atm

Discussion

8.	What is the specific gravity of CO2 at 27oC and pressure 1 atm with respect to air of with density 1 g/L?
A.	1.23
B.	1.55
C.	1.78
D.	1.96
Answer» D. 1.96

Discussion

9.	The highest pressure gas of a mixture has partial pressure p, the partial pressure of other gases decreases by factor of 2n-1, the partial pressure of second gases decreases by a factor of 2, partial pressure of third gas increases by 4, and so on, if the total pressure of gas mixture is 31p/16, how many gases are present in the mixture?
A.	3
B.	5
C.	10
D.	15
Answer» C. 10

Discussion

10.	What is the specific gravity of CO at 27oC and pressure 5 atm with respect to air (molecular wt. = 29 g) at 27oC and pressure 10 atm?
A.	0.48
B.	0.56
C.	0.64
D.	0.72
Answer» B. 0.56

Discussion

11.	What is the molecular mass of an ideal gas with pressure 1 atm, and density 10 g/L at temperature 27oC?
A.	84.5 g
B.	135.1 g
C.	186.8 g
D.	246.3 g
Answer» E.

Discussion

12.	The fraction of gas in a container is 0.1, if the total pressure of the container is 10 atm, what is the partial pressure of the gas?
A.	1 atm
B.	5 atm
C.	10 atm
D.	20 atm
Answer» B. 5 atm

Discussion

13.	The fraction of gas in a container is 0.5, if the total volume of the container is 6 liter, what is the volume of the gas?
A.	2 liter
B.	3 liter
C.	5 liter
D.	6 liter
Answer» E.

Discussion

14.	A gas mixture contains 30% CO2, 40% O2, 30% N2, if the partial pressure of CO2 is 6 Pa, what is the total pressure of gas mixture?
A.	6 Pa
B.	10 Pa
C.	20 Pa
D.	60 Pa
Answer» D. 60 Pa

Discussion

15.	What is the partial pressure of O2 with fraction 0.1, if the total pressure is 10 Pa?
A.	1 Pa
B.	3 Pa
C.	5 Pa
D.	7 Pa
Answer» B. 3 Pa

Discussion

16.	A container has gas mixture of 20% H2 and 80% N2 with total pressure P, now same amount of O2 is added to the mixture, what is the new partial pressure of N2?
A.	0.2P
B.	0.8P
C.	P
D.	1.6P
Answer» C. P

Discussion

17.	A gas mixture comprises of 20% CO2, 50% O2, and 30% N2 has the total pressure 100 Pa at temperature -73oC, if the temperature is increased to 27oC, what is the new partial pressure of N2?
A.	15 Pa
B.	30 Pa
C.	45 Pa
D.	60 Pa
Answer» D. 60 Pa

Discussion

18.	A container has gas mixture of 40% CO2 and 60% H2 with total pressure 10 Pa, if now O2 is added to it isothermally so that the final composition of the mixture becomes 20% CO2, 30% H2, and 50% O2, what is the partial pressure of O2 in the new composition?
A.	5 Pa
B.	10 Pa
C.	20 Pa
D.	35 Pa
Answer» C. 20 Pa

Discussion

19.	A vessel contains 10 moles of O2 and some other gases, total pressure is 10 atm, what is the partial pressure of O2?
A.	1 atm
B.	10 atm
C.	100 atm
D.	Cannot be determined
Answer» E.

Discussion

20.	A gas mixture has 30% O2, 40% H2, and 30% N2 with molar volume of N2 10 L/mole at temperature 27oC, what is the partial pressure of H2?
A.	2.4 atm
B.	3.6 atm
C.	4.8 atm
D.	6.4 atm
Answer» B. 3.6 atm

Discussion

21.	What is the total pressure of contained if it contains 0.3 fraction of N2 with partial pressure 8 Pa, 0.3 fraction of H2 with partial pressure 2 Pa, 0.4 fraction of CO2 with partial pressure 15 Pa?
A.	6.4 Pa
B.	7 Pa
C.	8.5 Pa
D.	9 Pa
Answer» E.

Discussion

22.	What is the total pressure of contained if it contains 0.5 fraction of O2 with partial pressure 3 Pa, 0.3 fraction of H2 with partial pressure 5 Pa, 0.2 fraction of CO2 with partial pressure 15 Pa?
A.	6 Pa
B.	7 Pa
C.	8 Pa
D.	9 Pa
Answer» B. 7 Pa

Discussion

23.	A gas mixture contains 20% CO, 30% SO2, and 50% N2, if the partial pressure of N2 is 5 atm at 27oC, what is the molar volume of N2?
A.	2.4 liter
B.	3.7 liter
C.	4.9 liter
D.	5.6 liter
Answer» B. 3.7 liter

Discussion

24.	A container with total volume 10 liter is filled with 20% of O2, 40% of N2, and 40% of CO, what is the volume of O2?
A.	2 liter
B.	4 liter
C.	8 liter
D.	10 liter
Answer» E.

Discussion

25.	What is the pressure of a 5 liter/mole ideal gas at temperature 27oC?
A.	2.5 atm
B.	3.8 atm
C.	4.4 atm
D.	5.3 atm
Answer» E.

Discussion

26.	What is the shape of a V-T curve for ideal gas?
A.	Straight line
B.	Parabolic
C.	Hyperbolic
D.	Ellipse
Answer» B. Parabolic

Discussion

27.	88 grams of CO2 at 27oC is applying 5 atm pressure, what is the volume occupied by it?
A.	5.6 liter
B.	7.9 liter
C.	9.8 liter
D.	12.2 liter
Answer» D. 12.2 liter

Discussion

28.	What is the density of O2 at 27oC with pressure 1 atm?
A.	1.1 g/L
B.	1.3 g/L
C.	1.5 g/L
D.	1.7 g/L
Answer» C. 1.5 g/L

Discussion

29.	What is the value of R?
A.	18.4 mole/hr
B.	44 mole/hr
C.	70 mole/hr
D.	98.5 mole/hr
Answer» D. 98.5 mole/hr

Discussion

30.	How many moles of H2 are recycled?
A.	1.5
B.	2.2
C.	2.8
D.	3.9
Answer» E.

Discussion

31.	A bypass stream does not go through which of the following?
A.	Mixer
B.	Process
C.	Separator
D.	None of the mentioned
Answer» C. Separator

Discussion

32.	What are the moles of ethane in products?
A.	2.4
B.	3.6
C.	6.4
D.	7.2
Answer» C. 6.4

Discussion

33.	How many moles of benzene are formed?
A.	8
B.	16
C.	32
D.	64
Answer» E.

Discussion

34.	What is the fraction of N2 in purge stream?
A.	0.04
B.	0.05
C.	0.16
D.	0.4
Answer» C. 0.16

Discussion

35.	What is the value of F for the B solution to remain 80% KOH if the recycle stream is removed?
A.	123.1 mole/hr
B.	666.5 mole/hr
C.	988.4 mole/hr
D.	1499.8 mole/hr
Answer» E.

Discussion

36.	What is the value of G?
A.	50 mole/hr
B.	100 mole/hr
C.	150 mole/hr
D.	200 mole/hr
Answer» D. 200 mole/hr

Discussion

37.	What is the value of H?
A.	250 mole/hr
B.	400 mole/hr
C.	525 mole/hr
D.	750 mole/hr
Answer» B. 400 mole/hr

Discussion

38.	A gas mixture with 5% Neon with pressure 10 atm at 27oC is entered a reactor with rate F, and another stream with pure Neon with 8 atm pressure at 27oC entered the reactor with rate 3 liter/s, product has 10% Neon with same conditions with rate P, what is the value of F?
A.	3 liter/s
B.	15 liter/s
C.	48 liter/s
D.	72 liter/s
Answer» E.

Discussion

39.	At what temperature, does SO2 with compressibility 2 has pressure 5 atm and molar volume 10 mole/s?
A.	300.5 K
B.	304.5 K
C.	310 K
D.	312.5 K
Answer» C. 310 K

Discussion

40.	What is the pressure of H2 with compressibility 0.6, molar volume 5 liter/mole at 27oC?
A.	2.9 atm
B.	5.4 atm
C.	9.6 atm
D.	14.5 atm
Answer» B. 5.4 atm

Discussion

41.	A gas mixture with 10% H2 with pressure 15 Pa at 27oC at the rate 20 liter/s is passed through a reactor and products a gas mixture with 30% H2 with pressure 25 Pa at 27oC, what is the rate of product?
A.	4 liter/s
B.	10 liter/s
C.	24 liter/s
D.	30 liter/s
Answer» B. 10 liter/s

Discussion

42.	A gas mixture with 50% Ar with pressure 80 Pa at 0oC at the rate 5 liter/s is passed through a reactor and products a gas mixture with 80% Ar with pressure 50 Pa at 27oC, what is the rate of product?
A.	5 liter/s
B.	10 liter/s
C.	20 liter/s
D.	40 liter/s
Answer» B. 10 liter/s

Discussion

43.	What is the pressure of CO2 gas with compressibility z = 0.8, if the ideal gas pressure of CO2 is 10 Pa, all other variables are same?
A.	5
B.	8
C.	10
D.	14
Answer» C. 10

Discussion

44.	A gas mixture with 20% Neon with pressure 3 atm at 27oC is entered a reactor with rate F, and another stream with pure Neon with 2 atm pressure at 27oC entered the reactor with rate 5 liter/s, product has 40% Neon with same conditions with rate P, what is the value of F?
A.	3 liter/s
B.	15 liter/s
C.	30 liter/s
D.	45 liter/s
Answer» D. 45 liter/s

Discussion

45.	CH4 with pressure 10 atm and volume 10 liter at 27oC is passed into a reactor with 20% excess oxygen, how many moles of oxygen is left in the products?
A.	2
B.	4
C.	6
D.	8
Answer» C. 6

Discussion

46.	A gas mixture has 10% CH4 with pressure 5 Pa at 27oC at the rate F, is passed through a reactor with another stream containing 60% CH4 with pressure 5 Pa at -73oC at the rate 10 liter/s, if the percentage of CH4 with pressure 5 Pa at 27oC in product is 80%, what is the value of F?
A.	1 liter/s
B.	1.4 liter/s
C.	2 liter/s
D.	2.6 liter/s
Answer» C. 2 liter/s

Discussion

47.	Glucose with pressure 10 atm at 27oC is passed through a reactor with O2, what is the temperature of CO2 produced if pressure becomes thrice?
A.	150 K
B.	240 K
C.	300 K
D.	330 K
Answer» B. 240 K

Discussion

48.	A gas mixture with 6% O2 with pressure 1 atm at 27oC is entered a reactor with rate F, and another stream with pure O2 with 2 atm pressure at 27oC entered the reactor with rate 1 liter/s, product has 10% O2 with same conditions with rate P, what is the value of F?
A.	575.5 liter/s
B.	725 liter/s
C.	895 liter/s
D.	997.5 liter/s
Answer» E.

Discussion

49.	A mixture with 60% O2 and 40% H2 with pressure 5 Pa at 27oC at the rate 15 liter/s is passed through a reactor with another stream containing pure H2 with pressure 10 Pa at 27oC at the rate 5 liter/s, what is the fraction of H2 with pressure 5 Pa at 27oC in product?
A.	0.2
B.	0.4
C.	0.6
D.	0.8
Answer» E.

Discussion

50.	What is the compressibility of neon (molar mass = 20) with density 20 g/liter at 27oC and 100 atm?
A.	2.1
B.	3.5
C.	4
D.	6.8
Answer» D. 6.8

Discussion

Explore topic-wise MCQs in Chemical Engineering.

A gas mixture with 50% H2 at the rate F is passed through a reactor and it produced a gas mixture with 80% H2 at the rate 15 liter/s, what is the value of F?

N2 with pressure 10 atm and H2 with pressure 30 atm, both with volume 10 liter at 27oC are passed into a reactor, how many moles NH3 is produced?

CO with pressure 10 atm at 27oC is passed through a reactor with O2, what is the pressure of CO2 produced if 60% CO reacted?

H2 at 27oC with pressure 10 atm and volume 10 liter is passed through a reactor with 6 moles of oxygen, if the limiting reagent reacts completely, how many moles of oxygen is left unreacted?

A gas mixture with 20% O2 with pressure 100 Pa at 27oC at the rate 50 liter/s is passed through a reactor and products a gas mixture with 40% O2 with pressure 25 Pa at 27oC, what is the rate of product?

CH4 with pressure 10 atm and volume 5 liter at 27oC is passed into a reactor with 50% excess oxygen, how many moles of oxygen is left in the products?

A container has two gases at 27oC, one with molar volume 6 L/mole, another with molar volume 3 L/mole, what is the total pressure of the container?

What is the specific gravity of CO2 at 27oC and pressure 1 atm with respect to air of with density 1 g/L?

What is the specific gravity of CO at 27oC and pressure 5 atm with respect to air (molecular wt. = 29 g) at 27oC and pressure 10 atm?

What is the molecular mass of an ideal gas with pressure 1 atm, and density 10 g/L at temperature 27oC?

The fraction of gas in a container is 0.1, if the total pressure of the container is 10 atm, what is the partial pressure of the gas?

The fraction of gas in a container is 0.5, if the total volume of the container is 6 liter, what is the volume of the gas?

A gas mixture contains 30% CO2, 40% O2, 30% N2, if the partial pressure of CO2 is 6 Pa, what is the total pressure of gas mixture?

What is the partial pressure of O2 with fraction 0.1, if the total pressure is 10 Pa?

A container has gas mixture of 20% H2 and 80% N2 with total pressure P, now same amount of O2 is added to the mixture, what is the new partial pressure of N2?

A gas mixture comprises of 20% CO2, 50% O2, and 30% N2 has the total pressure 100 Pa at temperature -73oC, if the temperature is increased to 27oC, what is the new partial pressure of N2?

A container has gas mixture of 40% CO2 and 60% H2 with total pressure 10 Pa, if now O2 is added to it isothermally so that the final composition of the mixture becomes 20% CO2, 30% H2, and 50% O2, what is the partial pressure of O2 in the new composition?

A vessel contains 10 moles of O2 and some other gases, total pressure is 10 atm, what is the partial pressure of O2?

A gas mixture has 30% O2, 40% H2, and 30% N2 with molar volume of N2 10 L/mole at temperature 27oC, what is the partial pressure of H2?

What is the total pressure of contained if it contains 0.3 fraction of N2 with partial pressure 8 Pa, 0.3 fraction of H2 with partial pressure 2 Pa, 0.4 fraction of CO2 with partial pressure 15 Pa?

What is the total pressure of contained if it contains 0.5 fraction of O2 with partial pressure 3 Pa, 0.3 fraction of H2 with partial pressure 5 Pa, 0.2 fraction of CO2 with partial pressure 15 Pa?

A gas mixture contains 20% CO, 30% SO2, and 50% N2, if the partial pressure of N2 is 5 atm at 27oC, what is the molar volume of N2?

A container with total volume 10 liter is filled with 20% of O2, 40% of N2, and 40% of CO, what is the volume of O2?

What is the pressure of a 5 liter/mole ideal gas at temperature 27oC?

What is the shape of a V-T curve for ideal gas?

88 grams of CO2 at 27oC is applying 5 atm pressure, what is the volume occupied by it?

What is the density of O2 at 27oC with pressure 1 atm?

What is the value of R?

How many moles of H2 are recycled?

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

What are the moles of ethane in products?

How many moles of benzene are formed?

What is the fraction of N2 in purge stream?

What is the value of F for the B solution to remain 80% KOH if the recycle stream is removed?

What is the value of G?

What is the value of H?

A gas mixture with 5% Neon with pressure 10 atm at 27oC is entered a reactor with rate F, and another stream with pure Neon with 8 atm pressure at 27oC entered the reactor with rate 3 liter/s, product has 10% Neon with same conditions with rate P, what is the value of F?

At what temperature, does SO2 with compressibility 2 has pressure 5 atm and molar volume 10 mole/s?

What is the pressure of H2 with compressibility 0.6, molar volume 5 liter/mole at 27oC?

A gas mixture with 10% H2 with pressure 15 Pa at 27oC at the rate 20 liter/s is passed through a reactor and products a gas mixture with 30% H2 with pressure 25 Pa at 27oC, what is the rate of product?

A gas mixture with 50% Ar with pressure 80 Pa at 0oC at the rate 5 liter/s is passed through a reactor and products a gas mixture with 80% Ar with pressure 50 Pa at 27oC, what is the rate of product?

What is the pressure of CO2 gas with compressibility z = 0.8, if the ideal gas pressure of CO2 is 10 Pa, all other variables are same?

A gas mixture with 20% Neon with pressure 3 atm at 27oC is entered a reactor with rate F, and another stream with pure Neon with 2 atm pressure at 27oC entered the reactor with rate 5 liter/s, product has 40% Neon with same conditions with rate P, what is the value of F?

CH4 with pressure 10 atm and volume 10 liter at 27oC is passed into a reactor with 20% excess oxygen, how many moles of oxygen is left in the products?

A gas mixture has 10% CH4 with pressure 5 Pa at 27oC at the rate F, is passed through a reactor with another stream containing 60% CH4 with pressure 5 Pa at -73oC at the rate 10 liter/s, if the percentage of CH4 with pressure 5 Pa at 27oC in product is 80%, what is the value of F?

Glucose with pressure 10 atm at 27oC is passed through a reactor with O2, what is the temperature of CO2 produced if pressure becomes thrice?

A gas mixture with 6% O2 with pressure 1 atm at 27oC is entered a reactor with rate F, and another stream with pure O2 with 2 atm pressure at 27oC entered the reactor with rate 1 liter/s, product has 10% O2 with same conditions with rate P, what is the value of F?

A mixture with 60% O2 and 40% H2 with pressure 5 Pa at 27oC at the rate 15 liter/s is passed through a reactor with another stream containing pure H2 with pressure 10 Pa at 27oC at the rate 5 liter/s, what is the fraction of H2 with pressure 5 Pa at 27oC in product?

What is the compressibility of neon (molar mass = 20) with density 20 g/liter at 27oC and 100 atm?