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Chemical Engineering :: Chemical Engineering Basics

  1. Earing is a defect found in steels after the following metal working operation (s).

  2. A.
    Deep drawing
    B.
    Rolling
    C.
    Extrusion
    D.
    Wire drawing

  3. For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be __________ toys.

  4. A.
    250
    B.
    500
    C.
    1000
    D.
    3000

  5. Hydrogen can be

  6. A.
    used in I.C. engines as fuel.
    B.
    liquefied & stored under cryogenic conditions.
    C.
    produced by electrolysis of water.
    D.
    all(a), (b) & (c).

  7. Internal energy of a gas obeying Vanderwall's equation of state, , depends upon its

  8. A.
    pressure & temperature.
    B.
    pressure & specific volume.
    C.
    temperature & specific volume.
    D.
    temperature only.

  9. __________ wire is never used for making the heating element.

  10. A.
    Nichrome
    B.
    Kanthal
    C.
    Invar
    D.
    None of these

  11. Pick out the correct statement

  12. A.
    Jet engine can work, where there is no atmosphere.
    B.
    Rocket engines cannot work, where there is no atmosphere.
    C.
    Rocket engines carry oxygen required for the combustion in the form of oxidiser.
    D.
    Jet engines also carry oxidiser.

  13. Ammonia gas can be dried by

  14. A.
    PCl5
    B.
    quick lime
    C.
    CaCl2
    D.
    concentrated H2SO4

  15. Consumable electrodes are used in the __________ welding.

  16. A.
    gas
    B.
    arc
    C.
    thermit
    D.
    resistance

  17. Magnesium is present in

  18. A.
    haemoglobin
    B.
    chlorophyll
    C.
    hypo solution
    D.
    none of these

  19. The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.

  20. A.
    runner
    B.
    cylinder
    C.
    mold
    D.
    none of these