Chemical Engineering Gate Yearwise 


Chemical Engineering Gate 2022 Questions



Ques 1Aptitude
Inhaling the smoke from a burning _________ could _________ you quickly.

a. tire / tier
b. tire / tyre
c. tyre / tire
d. tyre / tier


c is the correct answer.




Ques 2Aptitude
A sphere of radius π‘Ÿ cm is packed in a box of cubical shape. What should be the minimum volume (in cm3 ) of the box that can enclose the sphere?

a.
r3 / 8

b. r3
c. 2r3
d. 8r3


d is the correct answer.




Ques 3Aptitude
Pipes P and Q can fill a storage tank in full with water in 10 and 6 minutes, respectively. Pipe R draws the water out from the storage tank at a rate of 34 litres per minute. P, Q and R operate at a constant rate. If it takes one hour to completely empty a full storage tank with all the pipes operating simultaneously, what is the capacity of the storage tank (in litres)?

a. 26.8
b. 60.0
c. 120.0
d. 127.5


c is the correct answer.




Ques 4Aptitude
Six persons P, Q, R, S, T and U are sitting around a circular table facing the center not necessarily in the same order.
Consider the following statements:
  • P sits next to S and T.
  • Q sits diametrically opposite to P.
  • The shortest distance between S and R is equal to the shortest distance between T and U.
Based on the above statements, Q is a neighbor of

a. U and S
b. R and T
c. R and U
d. P and S


c is the correct answer.




Ques 5Aptitude
Rice, a versatile and inexpensive source of carbohydrate, is a critical component of diet worldwide. Climate change, causing extreme weather, poses a threat to sustained availability of rice. Scientists are working on developing Green Super Rice (GSR), which is resilient under extreme weather conditions yet gives higher yields sustainably.
Which one of the following is the CORRECT logical inference based on the information given in the above passage?

a. GSR is an alternative to regular rice, but it grows only in an extreme weather
b. GSR may be used in future in response to adverse effects of climate change
c. GSR grows in an extreme weather, but the quantity of produce is lesser than regular rice
d. Regular rice will continue to provide good yields even in extreme weather


b is the correct answer.




Ques 6Aptitude
Consider the following inequalities.
(i) 3𝑝 βˆ’ π‘ž < 4
(ii) 3π‘ž βˆ’ 𝑝 < 12
Which one of the following expressions below satisfies the above two inequalities?

a. 𝑝 + π‘ž < 8
b. 𝑝 + π‘ž = 8
c. 8 ≀ 𝑝 + π‘ž < 16
d. 𝑝 + π‘ž β‰₯ 16


a is the correct answer.




Ques 7Aptitude
Given below are three statements and four conclusions drawn based on the
statements.
Statement 1: Some engineers are writers.
Statement 2: No writer is an actor.
Statement 3: All actors are engineers.

Conclusion I: Some writers are engineers.
Conclusion II: All engineers are actors.
Conclusion III: No actor is a writer.
Conclusion IV: Some actors are writers.
Which one of the following options can be logically inferred?

a. Only conclusion I is correct
b. Only conclusion II and conclusion III are correct
c. Only conclusion I and conclusion III are correct
d. Either conclusion III or conclusion IV is correct


c is the correct answer.




Ques 8Chemical Processing
In soap manufacturing, the triglycerides present in oils and fats are hydrolyzed to mainly produce

a. Fatty acids and glycerol
b. Glycerol only
c. Fatty acids only
d. Glycerol and paraffins


a is the correct answer.




Ques 9Chemical Processing
The chemical formula of Glauber’s salt, used in the Kraft process, is

a. Na2CO3.10H2O
b. Na2S2O4.2H2O
c. Na2HPO4.2H2O
d. Na2SO4.10H2O


d is the correct answer.




Ques 10Chemical Processing
Catalytic reforming is commonly used in the petroleum industry to improve fuel quality. The undesirable reaction in the catalytic reforming of naphtha is

a. Hydrocracking of paraffins
b. Dehydrogenation of naphthenes
c. Isomerization of naphthenes
d. Cyclization of paraffins


a is the correct answer.




Ques 11Fluid Mechanics
Consider turbulent flow in a pipe under isothermal conditions. Let r denote the radial coordinate and z denote the axial flow direction. On moving away from the wall towards the center of the pipe, the rz-component of the Reynolds stress

a. Increases and then decreases
b. Decreases and then increases
c. Remains unchanged
d. Only increases


a is the correct answer.




Ques 12Fluid Mechanics
Consider two stationary spherical pure water droplets of diameters 𝑑1 and 2𝑑2. CO2 diffuses into the droplets from the surroundings. If the rate of diffusion of CO2 into the smaller droplet is π‘Š1 mol s-1, the rate of diffusion of CO2 into the larger droplet is

a. 2W1
b. 4W1
c. W1
d. 0.5W1


a is the correct answer.




Ques 13Mathematics
The value of (1 + 𝑖)12 where 𝑖 = βˆšβˆ’1, is

a. βˆ’64𝑖
b. 64𝑖
c. 64
d. βˆ’64


d is the correct answer.




Ques 14Mathematics
Let 𝑓(π‘₯) = 𝑒|x| , where x is real. The value of
df / dx
at π‘₯ = βˆ’1 is

a. e
b. -e
c.
1 / e

d. -
1 / e



c is the correct answer.




Ques 15Mathematics
The value of the real variable π‘₯ β‰₯ 0, which maximizes the function 𝑓(π‘₯) = π‘₯ee-x is

a. e
b. 0
c.
1 / e

d. 1


a is the correct answer.