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  1. __________ of test specimens is not involved in any hardness testing method.

  2. A.
    Fracture
    B.
    Indentation
    C.
    Wear
    D.
    Scratch

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  3. Out of the following, the most ductile material is

  4. A.
    mild steel
    B.
    copper
    C.
    nickel
    D.
    aluminium

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  5. What happens, when SO2 is passed through a solution of H2S in water ?

  6. A.
    Precipitation of sulphur takes place.
    B.
    H2SO3 is formed.
    C.
    Oleum is formed.
    D.
    None of these.

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  7. Which of the following will resist maxi-mum shock & vibration without cracking?

  8. A.
    Grey cast iron
    B.
    White cast iron
    C.
    Malleable iron
    D.
    Graphite

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  9. Surface tension of a liquid

  10. A.
    is due to intermolecular forces of cohesion.
    B.
    decreases with rise in temperature.
    C.
    is responsible for the spherical shape of an isolated liquid drop.
    D.
    all (a), (b) & (c).

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  11. For dynamic strain measurement, the wheatstone bridge used is of __________ type.

  12. A.
    voltage sensitive null
    B.
    voltage sensitive deflected
    C.
    current sensitive deflected
    D.
    none of these

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  13. Which drug is made from vegetables ?

  14. A.
    Pencilin
    B.
    Aspirin
    C.
    Quinine
    D.
    Insulin

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  15. Which of the following are made out of the carbon steel having carbon content of 0.9 to 1% ?

  16. A.
    Small punches, broaches reamers and springs.
    B.
    Cutlery, screws, rivets and files.
    C.
    Mandrels, twist drills, small lathe tools and razors.
    D.
    Forgings like can shaft, structural steel plate, threading dies and drawing dies.

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  17. Material of construction of surveying metallic tapes is __________ which has low coefficient of expansion & enough strength.

  18. A.
    constantan
    B.
    invar
    C.
    pewter metal
    D.
    monel metal

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  19. Welded joint is superior to revetted joint in respect of ease of fabrication, weight and strength. Which of the following joints is the most suitable for pipes carrying fluids under high pressure and temperature ?

  20. A.
    Flanged joint
    B.
    Expansion joint
    C.
    Bell and spigot joint
    D.
    None of these

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