Menu
Home / Chemical Engineering / Chemical Process :: Section-15

Chemical Engineering :: Chemical Process

Chemical Process - Section 1
Chemical Process - Section 2
Chemical Process - Section 3
Chemical Process - Section 4
Chemical Process - Section 5
Chemical Process - Section 6
Chemical Process - Section 7
Chemical Process - Section 8
Chemical Process - Section 9
Chemical Process - Section 10
Chemical Process - Section 11
Chemical Process - Section 12
Chemical Process - Section 13
Chemical Process - Section 14
Chemical Process - Section-15
  1. Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.

    2. A.

     -53
    B.

     -103
    C.

     -183
    D.

     -196

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. Parathion and Malathion are

    3. A.

     Pesticides
    B.

     Plasticisers for unsaturated polysters
    C.

     Pain-relieving drugs (analgesic)
    D.

     Tranquilisers

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. Pasteurisation of milk means

    4. A.

     Removal of fatty and albuminous substance from it
    B.

     Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics
    C.

     Inhibiting the growth of micro-organisms without killing them
    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is

    5. A.

     0.14
    B.

     0.34
    C.

     0.94
    D.

     1.4

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. Pick out the true statement pertaining to water treatment.

    6. A.

     Slow sand filters can remove colour completely
    B.

     Activated carbon can be used for taste & odour control without subsequent filtration
    C.

     Application of activated carbon reduces the temporary hardness of water
    D.

     Normally, the turbidity is removed by adding a coagulent prior to sedimentation

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. Pick out the false statement pertaining to water treatment.

    7. A.

     Aeration of water is effective in CO₂ removal
    B.

     The zeolite water softening process reduces the hardness of water by not more than 50%
    C.

     Sodium sulphate or sodium carbonate do not cause hardness in water
    D.

     Water with pH value less than 7, is acidic

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. Phenol formaldehyde

    8. A.

     Employs addition polymerisation
    B.

     Employs condensation polymerisation
    C.

     Is a monomer
    D.

     Is an abrasive material

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. Phenol is mainly used

    9. A.

     To produce benzene
    B.

     To produce phenol formaldehyde
    C.

     To produce polyester resin
    D.

     As a plasticiser for unsaturated polyster

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. Phthalic anhydride is used

    10. A.

     In making PVC
    B.

     As plasticisers
    C.

     In insecticides manufacture
    D.

     For making nylon-6

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. Pick out the wrong statement.

    11. A.

     Azoic dyes are mostly applied on cotton fabrics
    B.

     Basic dyes (e.g. amino derivatives) are applied mostly to paper
    C.

     Mordant dyes are applied mainly to wools
    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers