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GATE 2025 ME question paper PDF and answer key

The official GATE 2025 Mechanical Engineering paper, organised by IIT Roorkee: 65 questions for 100 marks in 3 hours. Download the official question paper and answer key as PDFs. Below is how the marks were split by topic, the complete official answer key and 5 questions solved step by step.

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Question paper (PDF)Official answer key (PDF)

Source: the official paper and answer key published by IIT Roorkee for GATE 2025 (official GATE site). Spotted a mistake? Email team@lemyte.com.

General Aptitude
10 · 15 marks
Mechanical Engineering
55 · 85 marks
MCQ / MSQ / NAT
38 / 1 / 26
Marks to all
None

Where the marks were

GATE 2025 ME topic-wise marks

Mechanical Engineering questions only; General Aptitude adds 15 marks on top. The top three topics carried 36 of the 85 subject marks.

TopicQuestionsMarks
Manufacturing Engineering1218
Fluid Mechanics610
Mechanics of Materials58
Industrial Engineering36
Heat Transfer35
Thermal Applications35
Theory of Machines35
Machine Design35
Thermodynamics34
Calculus24
Differential Equations23
Complex Variables23
Vibrations23
Applied Mechanics22
Linear Algebra11
Probability and Statistics11
Engineering Materials11
Numerical Methods11

Free solved questions

5 solved questions from GATE 2025 ME

Question text and figures as in the official paper, the answer from the official key, and a worked solution. The other 60 solutions are in your report after you take the paper.

Q5 · General Aptitude · MCQ · 1 mark

P and Q play chess frequently against each other. Of these matches, P has won 80%80\% of the matches, drawn 15%15\% of the matches and lost 5%5\% of the matches.

If they play 33 more matches, what is the probability of P winning exactly 22 of these 33 matches?

  • (A)
    48125\frac{48}{125}
  • (B)
    16125\frac{16}{125}
  • (C)
    1625\frac{16}{25}
  • (D)
    2548\frac{25}{48}

Answer (official key): A

Solution

The probability of winning is 0.80.8 and of not winning is 0.20.2. For independent matches, the required probability is (32)(0.8)2(0.2)=0.384=48/125\binom{3}{2}(0.8)^2(0.2)=0.384=48/125. Hence, option A.

Q6 · General Aptitude · MCQ · 2 marks

Identify the option that has the most appropriate sequence such that a coherent paragraph is formed:

P. At once, without thinking much, people rushed towards the city in hordes with the sole aim of grabbing as much gold as they could.

Q. However, little did they realize about the impending hardships they would have to face on their way to the city: miles of mud, unfriendly forests, hungry beasts and inimical local lords – all of which would reduce their chances of getting gold to almost zero.

R. All of them thought that easily they could lay their hands on gold and become wealthy overnight.

S. About a hundred years ago, the news that gold had been discovered in Kolar spread like wildfire and the whole State was in raptures.

  • (A)
    P→Q→R→S\mathrm{P\to Q\to R\to S}
  • (B)
    Q→S→R→P\mathrm{Q\to S\to R\to P}
  • (C)
    S→Q→P→R\mathrm{S\to Q\to P\to R}
  • (D)
    S→P→R→Q\mathrm{S\to P\to R\to Q}

Answer (official key): D

Solution

S introduces the discovery of gold. P describes the immediate rush, R explains the people's expectations, and Q contrasts those expectations with the impending hardships. The sequence is S → P → R → Q, option D.

Q15 · Heat Transfer · MCQ · 1 mark

Let a spherical block of ice at −7 ∘C-7\,^{\circ}\mathrm{C} be exposed to atmospheric air at 30 ∘C30\,^{\circ}\mathrm{C} with the gravitational direction as shown in the figure below. What will be the overall direction of air flow in this situation?

Figure for GATE 2025 ME question 15 (Heat Transfer)

  • (A)
    Upward
  • (B)
    Downward
  • (C)
    NO motion
  • (D)
    Sideward

Answer (official key): B

Solution

Air adjacent to the ice cools and becomes denser than the surrounding warm air. It sinks under gravity, producing downward natural-convection flow. Hence, option B.

Q31 · Numerical Methods · Numerical · 1 mark

The values of a function ff obtained for different values of xx are shown in the table below.

xx000.250.250.50.50.750.751.01.0
f(x)f(x)0.90.92.02.01.51.51.81.80.40.4

Using Simpson’s one-third rule,

∫01f(x) dx≈‾\int_0^1 f(x)\,dx\approx \underline{\hspace{2cm}}

(rounded off to 2 decimal places).

Answer (official key): 1.61 to 1.65

Solution

With spacing h=0.25h=0.25, Simpson's one-third rule gives I≈0.253[0.9+0.4+4(2.0+1.8)+2(1.5)]=1.625I\approx\frac{0.25}{3}[0.9+0.4+4(2.0+1.8)+2(1.5)]=1.625. Rounded to two decimal places, the answer is 1.631.63.

Q44 · Fluid Mechanics · MSQ · 2 marks

For a fully-developed pipe flow, which of the following options is/are correct?

  • (A)
    For the same maximum velocity, the average velocity is higher in the turbulent regime than that of the laminar regime
  • (B)
    Compressibility effects are important if Mach number is less than 0.30.3
  • (C)
    For laminar flow, the friction factor is independent of surface roughness
  • (D)
    For laminar flow, friction factor decreases with decrease in Reynolds number

Answer (official key): A, C

Solution

A is correct: turbulent flow has a flatter velocity profile, so its average velocity is higher for the same maximum velocity; laminar flow has Vavg=Vmax⁡/2V_{\mathrm{avg}}=V_{\max}/2. B is incorrect: compressibility effects are generally negligible for Mach numbers below 0.30.3. C is correct: the laminar Darcy friction factor is f=64/Ref=64/\mathrm{Re}, independent of roughness. D is incorrect: this relation shows that friction factor increases when Reynolds number decreases. Therefore A and C are correct.

The other 60 questions are solved in your report when you take GATE 2025 ME as a 3-hour test.

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Official answer key

GATE 2025 ME answer key

All 65 answers from the official key. Numerical answers are ranges; “or” means the key accepts either answer.

Download the official GATE 2025 ME answer key (PDF)
QTopicTypeMarksAnswer
1Verbal AptitudeMCQ1A
2Verbal AptitudeMCQ1A
3Quantitative AptitudeMCQ1C
4Quantitative AptitudeMCQ1D
5Quantitative AptitudeMCQ1A
6Verbal AptitudeMCQ2D
7Analytical AptitudeMCQ2D
8Spatial AptitudeMCQ2B
9Spatial AptitudeMCQ2B
10Quantitative AptitudeMCQ2B
11Linear AlgebraMCQ1C
12Differential EquationsMCQ1B
13Complex VariablesMCQ1D
14Probability and StatisticsMCQ1D
15Heat TransferMCQ1B
16Fluid MechanicsMCQ1B
17Fluid MechanicsMCQ1C
18ThermodynamicsMCQ1C
19Thermal ApplicationsMCQ1B
20Engineering MaterialsMCQ1C
21Manufacturing EngineeringMCQ1B
22Mechanics of MaterialsMCQ1A
23Manufacturing EngineeringMCQ1A
24Manufacturing EngineeringMCQ1B
25Manufacturing EngineeringMCQ1C
26Applied MechanicsMCQ1A
27Applied MechanicsMCQ1A
28Mechanics of MaterialsMCQ1B
29Theory of MachinesMCQ1B
30Machine DesignMCQ1C
31Numerical MethodsNumerical11.61 to 1.65
32ThermodynamicsNumerical15.5 to 5.9
33Manufacturing EngineeringNumerical19.92 to 9.98
34Manufacturing EngineeringNumerical1189.8 to 190
35VibrationsNumerical10.7 to 0.72
36CalculusMCQ2A
37Industrial EngineeringMCQ2B
38Manufacturing EngineeringMCQ2A
39Manufacturing EngineeringMCQ2B
40Manufacturing EngineeringMCQ2B
41Manufacturing EngineeringMCQ2A
42VibrationsMCQ2A
43Machine DesignMCQ2B
44Fluid MechanicsMSQ2A, C
45Complex VariablesNumerical2-0.1 to 0.1
46CalculusNumerical20.9 to 1.1
47Differential EquationsNumerical20.45 to 0.55
48Heat TransferNumerical2308 to 310
49Fluid MechanicsNumerical280 to 83
50Fluid MechanicsNumerical22.9 to 3.1
51Heat TransferNumerical26.5 to 6.8
52Thermal ApplicationsNumerical298.5 to 101.5
53Fluid MechanicsNumerical21197 to 1203
54ThermodynamicsNumerical299 to 101
55Thermal ApplicationsNumerical20.95 to 1.1
56Mechanics of MaterialsNumerical2-0.29 to -0.25 or 0.25 to 0.29
57Mechanics of MaterialsNumerical20
58Mechanics of MaterialsNumerical21 to 1.1
59Theory of MachinesNumerical225
60Theory of MachinesNumerical261 to 63
61Machine DesignNumerical212 to 14.2 or 18 to 28.4 or 32 to 34.2
62Manufacturing EngineeringNumerical20.83 to 0.87
63Manufacturing EngineeringNumerical22.65 to 2.95
64Industrial EngineeringNumerical226000 to 26100
65Industrial EngineeringNumerical22

Questions about GATE 2025 ME

How many questions are in the GATE 2025 ME paper?

65 questions for 100 marks: 10 General Aptitude questions worth 15 marks and 55 Mechanical Engineering questions worth 85 marks. By type, there were 38 MCQs, 1 MSQs, 26 numerical answer (NAT) questions. The paper lasted 3 hours.

Is there negative marking in GATE 2025 ME?

Yes, for MCQs only. A wrong MCQ answer costs one-third of its marks (−⅓ for a 1-mark question, −⅔ for a 2-mark question). MSQ and numerical (NAT) questions have no negative marking, and an MSQ earns marks only when every correct option is chosen.

Which topics carried the most marks in GATE 2025 ME?

Outside General Aptitude, the biggest topics were Manufacturing Engineering (18 marks), Fluid Mechanics (10 marks), Mechanics of Materials (8 marks). The full topic-wise split is in the table on this page.

Were any GATE 2025 ME questions awarded marks to all?

No. Every question was graded with the answer in the official key.

Where does this GATE 2025 ME answer key come from?

From the official answer key published by IIT Roorkee, which organised GATE 2025. Range answers for numerical questions and questions with more than one accepted answer are kept exactly as the key gives them.

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