Chemical Engineering Gate Yearwise 


Chemical Engineering Gate 2025 Questions with Answer

Ques 27 GATE 2025

An adiabatic pump of efficiency 40% is used to increase the water pressure from 200 kPa to 600 kPa. The flow rate of water is 600 L/min. The specific heat of water is 4.2 kJ/(kg°C). Assuming water is incompressible with a density of 1000 kg/m3, the maximum temperature rise of water across the pump is ______ °C (rounded off to 3 decimal places).


(0.317) is the correct answer.

Ques 28 GATE 2025

Is there any good show _______ television tonight?
Select the most appropriate option to complete the above sentence.

A

in

B

at

C

within

D

on


(d) is the correct answer.

Correct Option: d) on.

Complete Sentence: Is there any good show on television tonight?

Explanation: The preposition "on" is used when referring to a broadcast medium or a service that delivers content.

  • We use "on television" or "on TV" to mean something is being shown or broadcast via the television medium.
    • Example: "The football game is on tonight."
    • Example: "What's on channel five?"

Why the Other Options are Incorrect

  • a) in: This preposition is generally used when something is contained inside a physical space (e.g., "The batteries are in the remote") or part of a piece of published content (e.g., "There is an article in the newspaper"). We do not use "in" to mean "broadcast by."
  • b) at: This preposition is typically used for specific locations or points (e.g., "at the cinema," "at home," "at a specific time"). It is not the conventional choice for a general broadcast medium.
  • c) within: This is a more formal synonym for "inside" or "during a period of time" (e.g., "within the boundaries," "you must reply within an hour"). It does not fit the context of television broadcasting.

Ques 29 GATE 2025

As the police officer was found guilty of embezzlement, he was _______ dismissed from the service in accordance with the Service Rules.
Select the most appropriate option to complete the above sentence.

A

sumptuously

B

brazenly

C

unintentionally

D

summarily


(d) is the correct answer.

Ques 30 GATE 2025

The sum of the following infinite series is:
1/1! + 1/2! + 1/3! + 1/4! + 1/5! + ···

A

π

B

1+e

C

e-1

D

e


(c) is the correct answer.

Ques 31 GATE 2025

A thin wire is used to construct all the edges of a cube of 1 m side by bending, cutting and soldering the wire. If the wire is 12 m long, what is the minimum number of cuts required to construct the wire frame to form the cube?

A

3

B

4

C

6

D

12


(a) is the correct answer.

Ques 32 GATE 2025

The figures I, II and III are parts of a sequence. Which one of the following options comes next in the sequence at IV?

A

B

C

D


(a) is the correct answer.

Ques 33 GATE 2025

“Why do they pull down and do away with crooked streets, I wonder, which are my delight, and hurt no man living? Every day the wealthier nations are pulling down one or another in their capitals and their great towns: they do not know why they do it; neither do I. It ought to be enough, surely, to drive the great broad ways which commerce needs and which are the life-channels of a modern city, without destroying all history and all the humanity in between: the islands of the past.” (From Hilaire Belloc’s “The Crooked Streets”)
Based only on the information provided in the above passage, which one of the following statements is true

A

The author of the passage takes delight in wondering.

B

The wealthier nations are pulling down the crooked streets in their capitals.

C

In the past, crooked streets were only built on islands.

D

Great broad ways are needed to protect commerce and history.


(b) is the correct answer.

Ques 34 GATE 2025

Rohit goes to a restaurant for lunch at about 1 PM. When he enters the restaurant, he notices that the hour and minute hands on the wall clock are exactly coinciding. After about an hour, when he leaves the restaurant, he notices that the clock hands are again exactly coinciding. How much time (in minutes) did Rohit spend at the restaurant?

A

64 6/11

B

66 5/13

C

65 5/11

D

66 6/13


(a) is the correct answer.

Ques 35 GATE 2025

A color model is shown in the figure with color codes: Yellow (Y), Magenta (M), Cyan (Cy), Red (R), Blue (Bl), Green (G), and Black (K).
Which one of the following options displays the color codes that are consistent with the color model?

A

B

C

D


(a) is the correct answer.

Ques 36 GATE 2025

A circle with center at (x,y)=(0.5,0) and radius =0.5 intersects with another circle with center at (x,y)=(1,1) and radius =1 at two points. One of the points of intersection (x,y) is:

A

(0,0)

B

(0.2, 0.4)

C

(0.5, 0.5)

D

(1,2)


(a) is the correct answer.

Ques 37 GATE 2025

An object is said to have an n-fold rotational symmetry if the object, rotated by an angle of 2π/n, is identical to the original.
Which one of the following objects exhibits 4-fold rotational symmetry about an axis perpendicular to the plane of the screen?
Note: The figures shown are representative.

A

B

C

D


(a) is the correct answer.

Ques 38 GATE 2025

In industrial heat exchanger design, the overall heat transfer coefficient U is estimated from the equation 1/U = 1/hi + 1/ho, where hi and ho are the convective heat transfer coefficients on the inner and outer side of the tube, respectively. This is valid for (i) tube of (ii) thermal conductivity.
Which one of the following is the CORRECT option to fill in the gaps (i) and (ii)?

A

(i) thick-walled, (ii) high

B

(i) thin-walled, (ii) high

C

(i) thin-walled, (ii) low

D

(i) thick-walled, (ii) low


(b) is the correct answer.

Ques 39 GATE 2025

A hot plate is placed in contact with a cold plate of a different thermal conductivity as shown in the figure. The initial temperature (at time t=0) of the hot plate and cold plate are Th and Tc, respectively. Assume perfect contact between the plates.

Which one of the following is an appropriate boundary condition at the surface S for solving the unsteady state, one-dimensional heat conduction equations for the hot plate and cold plate for t>0?

A

Temperature at S is same for both the plates

B

Gradient of temperature at S is same for both the plates

C

Gradient of temperature vanishes at S

D

Temperature at S is the average of Th and Tc


(a) is the correct answer.

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