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Engineering Materials & Metallurgy (EMM) important questionsMost repeated in SPPU papers

These 18 questions appeared in more than one SPPU Engineering Materials & Metallurgy paper we have: 8 papers, from May 2023 to Nov 2025. The most-asked come first. Each one links to the papers it was asked in.

All EMM papers and notes

Repeated questions

Endsem questions (16)

  1. 4×asked

    Differentiate between White & Grey Cast Iron.

    Nov 2025 ·May 2025 ·Nov 2023 ·May 2023

  2. 3×asked

    With neat labels draw Iron-Iron Carbide equilibrium diagram.

    May 2025 ·Nov 2023 ·May 2023

  3. 2×asked

    Examine the effect of alloying element on alloy steel? Give suitable example?

    May 2025 ·Nov 2023

  4. 2×asked

    Explain the austenite to pearlite transformation with a suitable sketch.

    May 2025 ·Nov 2023

  5. 2×asked

    State Gibbs Phase rule? List application and Limitation of Gibbs Phase rule?

    May 2025 ·May 2023

  6. 2×asked

    With phase transformation mention critical temperature in Iron-Carbon equilibrium diagram.

    May 2025 ·May 2023

  7. 2×asked

    What is solid solution? Explain substitutional & interstitial solid solution? Explain Hume-Rothery's rule for solid solubility?

    May 2024 ·Nov 2023

  8. 2×asked

    Define hardenability? Differentiate between austempering and Martempering withdiagram?

    Nov 2023 ·May 2023

  9. 2×asked

    Define steel? Explain classification of steel with applications?

    Nov 2023 ·May 2023

  10. 2×asked

    Discuss nucleation & crystal growth in solidification of pure metals?

    Nov 2023 ·May 2023

  11. 2×asked

    Draw isothermal time temperature transformation diagram? What is the importance of TTT diagrams in Heat Treatment processes?

    Nov 2023 ·May 2023

  12. 2×asked

    Draw neat microstructures of the following: i) 0.2% carbon steel, ii) 0.8% carbon steel iii) 1.2% carbon steel 2

    Nov 2023 ·May 2023

  13. 2×asked

    Explain homogenous and heterogeneous nucleation with neat sketches.

    Nov 2023 ·May 2023

  14. 2×asked

    Give typical composition, important properties and applications of Inconel?

    Nov 2023 ·May 2023

  15. 2×asked

    List important properties of aluminium? Write composition and application of duralumin?

    Nov 2023 ·May 2023

  16. 2×asked

    What is age hardening? Explain with example application of age hardening?

    Nov 2023 ·May 2023

Insem questions (2)

  1. 2×asked

    Compare between Optical and scanning electron microscopy on the basis of following points: block diagram, working principle, ‘imaging’ process, magnification, use & disadvantages.

    Oct 2025 ·Oct 2023

  2. 2×asked

    What do you mean by non-destructive testing? Enlist the NDT methods. Explain ultrasonic method of testing.

    Oct 2025 ·Oct 2023

Questions count as repeated when their wording matches closely across papers. Numericals that depend on a figure are left out, since the figure changes from paper to paper.