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Chemical Engineering :: Chemical Engineering Basics-2

  1. Rate of chemical reaction is not much affected, if the reactants are in __________ form.

  2. A.

     Solids

    B.

     Liquids

    C.

     Either A or B

    D.

     Gaseous


  3. Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional area of the conductor)

  4. A.

     A

    B.

     L

    C.

     A²

    D.

     Both A & B


  5. Out of the following the refractive index is the highest for

  6. A.

     Glass

    B.

     Diamond

    C.

     Brine

    D.

     Kerosene


  7. Compressed dry air is used as the cutting fluid, while machining

  8. A.

     Steel

    B.

     Cast iron

    C.

     Aluminium

    D.

     None of these


  9. The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

  10. A.

     Casting

    B.

     Pattern

    C.

     Draft

    D.

     Distoration


  11. Cold working of a material results in increase in hardness, which is termed as the __________ hardening.

  12. A.

     Cold

    B.

     Work

    C.

     Age

    D.

     Induction


  13. The increase in hardness of metal due to its cold working is termed as the __________ hardening.

  14. A.

     Work

    B.

     Age

    C.

     Induction

    D.

     Flame


  15. Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a __________ calorimeter.

  16. A.

     Bomb

    B.

     Throttling

    C.

     Junker's

    D.

     Boy's


  17. Pressure exerted by a liquid depends upon its

  18. A.

     Surface tension

    B.

     Density

    C.

     Viscosity

    D.

     Buoyancy


  19. Scab is a defect developed during __________ of metals.

  20. A.

     Forging

    B.

     Sand casting

    C.

     Machining

    D.

     Welding