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Chemical Engineering :: Chemical Process

  1. Higher vicosity index of a lubricating oil denotes

  2. A.

     Less changes in fluidity of oil with temperature

    B.

     Substantially high change in fluidity of oil with temperature

    C.

     Its unsuitability under varying temperature conditions

    D.

     None of these


  3. Acetone is produced by catalytic dehydrogenation of

  4. A.

     Phenol

    B.

     Naphthalene

    C.

     Isopropanol

    D.

     Ethyl benzene


  5. Highly porous refractory bricks are

  6. A.

     Less susceptible to chemical attack by molten fluxes and gases etc

    B.

     Very strong

    C.

     Having very high thermal conductivity

    D.

     None of these


  7. __________ is produced by the dehydrogenation of ethyl benzene.

  8. A.

     Styrene

    B.

     Ethyl alcohol

    C.

     Cumene

    D.

     Phenol


  9. Fluorescent dyes are added in detergents to

  10. A.

     Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics

    B.

     Attain distinctiveness from other brands

    C.

     Act as tarnish inhibitor for metals like German silver

    D.

     None of these


  11. Alkylbenzene sulfonate (ABS) is a

  12. A.

     Detergent

    B.

     Rubber

    C.

     Pesticide

    D.

     Polyester


  13. Wet chlorine gas produced during electrolysis of brine is dehydrated by

  14. A.

     Spraying 66° Be H₂SO₄ counter current to the flow of the gas

    B.

     Passing it through a bed of diatomaceous earth

    C.

     Passing it through a bed of silica gel

    D.

     None of these


  15. The catalyst used in shift converter is

  16. A.

     Nickel

    B.

     Vanadium

    C.

     Silica gel

    D.

     Alumina


  17. Zeigler process

  18. A.

     Produces high density polyethylene

    B.

     Produces low density polyethylene

    C.

     Uses no catalyst

    D.

     Employs very high pressure