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  • Question
  • Use of 'grinding aids' is done in __________ grinding.


  • Options
  • A. dry
  • B. wet
  • C. ultrafine
  • D. intermediate

  • Correct Answer
  • dry 


  • More questions

    • 1. In condensation polymerisation as compared to addition polymerisation

    • Options
    • A. the monomers are unsaturated compounds.
    • B. no co-product is lost.
    • C. the monomers contain two functional groups.
    • D. generally only one monomer is involved
    • Discuss
    • 2. The generic chemical name for the class of polymers which are commerically known as nylons is

    • Options
    • A. polyolefins
    • B. polyamide
    • C. polyacrylate
    • D. polyurathane
    • Discuss
    • 3. Synthetic rubber

    • Options
    • A. deforms, if stretched to double of its original dimension.
    • B. is brittle at low temperature
    • C. is softer at higher temperature.
    • D. is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases.
    • Discuss
    • 4. Dielectric strength of a material is

    • Options
    • A. its energy stroage capacity.
    • B. a magnetic property.
    • C. its capacity to resist the flow of current.
    • D. its capacity to withstand high voltage.
    • Discuss
    • 5. In a closed loop system, the process to be controlled is an integrating process with transfer function l/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit

    • Options
    • A. overdamped response.
    • B. underdamped response.
    • C. undamped response.
    • D. unstable response.
    • Discuss
    • 6. Size range of polymer molecules varies from __________ metre.

    • Options
    • A. 10-2 to 10-5
    • B. 10-4 to 10-7
    • C. 10-1 to 10-2
    • D. 10-8 to 10-10
    • Discuss
    • 7. All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it can not be used for the production of plastic

    • Options
    • A. filaments
    • B. pipes
    • C. buckets
    • D. tubings
    • Discuss
    • 8. Flash point of motor gasoline may be around __________ °C.

    • Options
    • A. 10
    • B. 45
    • C. 100
    • D. 150
    • Discuss
    • 9. Solid particles of different densities are separated by

    • Options
    • A. filters
    • B. thickness
    • C. cyclones
    • D. sorting classifier
    • Discuss
    • 10. Isotopes of an element have different

    • Options
    • A. mass number
    • B. electronic configuration
    • C. nuclear charge
    • D. chemical properties
    • Discuss


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