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Chemical Engineering :: Chemical Engineering Basics-2

  1. Normalising of a casting does not

  2. A.

     Induce stresses in it

    B.

     Refine its grain structure

    C.

     Reduce seggregation

    D.

     Improve its mechanical properties


  3. Normalising of an object does not

  4. A.

     Refine coarse grain structure obtained during hot working

    B.

     Improve ductility

    C.

     Improve yield strength

    D.

     Improve machanical properties


  5. __________ is not used as the control rod material in a nuclear reactor.

  6. A.

     Cobalt

    B.

     Hafnium

    C.

     Cadmium

    D.

     Boron


  7. Young's modulus of a material is the measure of its

  8. A.

     Stiffness

    B.

     Malleability

    C.

     Creep resistance

    D.

     Tensile strength


  9. __________ is the hardest material out of the following.

  10. A.

     Boron carbide

    B.

     Tungsten carbide

    C.

     Hardened steel

    D.

     Silicon carbide


  11. With decrease in the grain size of a material, its creep resistance

  12. A.

     Increases

    B.

     Decreases

    C.

     Remains constant

    D.

     Either A or B ; depends on the material


  13. Normal dosage of chlorine in public water supply scheme ranges from __________ ppm.

  14. A.

     0.5 to 1

    B.

     10 to 15

    C.

     300 to 500

    D.

     1000 to 1500


  15. Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?

  16. A.

     Aluminium

    B.

     Copper

    C.

     Titanium

    D.

     Stainless steel


  17. Which of the following is not a principal alloying element for the structural steel?

  18. A.

     Molybednum

    B.

     Nickel

    C.

     Manganese

    D.

     Chromium


  19. Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

  20. A.

     Manganese

    B.

     Silicon

    C.

     Nickel

    D.

     Chromium