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Chemical Engineering :: Chemical Engineering Basics-2

  1. Spherical shape of mercury droplets is due to its

  2. A.

     High viscosity

    B.

     Low surface tension

    C.

     High density

    D.

     High surface tension


  3. Which of the following polymers is obtained by copolymerisation of three monomers?

  4. A.

     SAN

    B.

     ABS

    C.

     SBR

    D.

     PTFE


  5. Metalloids

  6. A.

     Are good conductor of heat & electricity

    B.

     Act as electron donors with metals & as electron acceptor with non-metals

    C.

     Are not necessarily solids at room temperature

    D.

     Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron


  7. Temperature attained in soldering of metals is about __________ °C.

  8. A.

     150-300

    B.

     400-500

    C.

     650-800

    D.

     1000-1100


  9. Methyl orange indicator turns

  10. A.

     Orange yellow in alkaline medium

    B.

     Orange yellow in acidic medium

    C.

     Colourless in acidic medium

    D.

     Colourless in basic medium


  11. When an isolated thermodynamic system executes a process,

  12. A.

     Work is done

    B.

     Heat transfer takes place

    C.

     Mass flow occurs across the boundary of the system

    D.

     No chemical reaction takes place within the system


  13. In chemical dehumidification process

  14. A.

     Wet bulb temperature increases

    B.

     Dry bulb temperature remains constant

    C.

     Dew point temperature increases

    D.

     Dry bulb temperature increases


  15. In a fuel cell, chemical energy is converted into

  16. A.

     Electrical energy directly

    B.

     Mechanical energy

    C.

     Electrical energy and stored therein

    D.

     None of these


  17. Out of the following surfaces, the emis-sivity will be minimum for

  18. A.

     Aluminium foil

    B.

     Concrete

    C.

     Plaster

    D.

     Smooth glass


  19. Which set of materials is used as a moderator in nuclear reactor?

  20. A.

     Zircalloy & berrylium

    B.

     Zircalloy & heavy water

    C.

     Zirconium & berrylium

    D.

     Heavy water & berrelium