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  • Question
  • The initial setting time of lime-pozzolana, is


  • Options
  • A. 30 minutes
  • B. 60 minutes
  • C. 90 minutes
  • D. 120 minutes.

  • Correct Answer
  • 120 minutes. 


  • Building Materials problems


    Search Results


    • 1. Wrought iron contains carbon upto

    • Options
    • A. 0.25%
    • B. 1.0%
    • C. 1.5%
    • D. 2%.
    • Discuss
    • 2. Pick up the correct statement from the following:

    • Options
    • A. For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
    • B. For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
    • C. For thin structures which remain continuously under water, the water-cement ratio by weight should be 0.55
    • D. For massive concrete structures which remain continuously under water, the water cement ratio by weight should be 0.65
    • E. All the above.
    • Discuss
    • 3. The plastics made from cellulose resin

    • Options
    • A. are as clear as glass
    • B. are tough and strong
    • C. possess excellent electrical properties
    • D. All the above.
    • Discuss
    • 4. Varnish is a transparent or semi-transparent solution of resinuous substances in

    • Options
    • A. alcohol
    • B. linseed
    • C. turpentine
    • D. all the above.
    • Discuss
    • 5. Sewer pipes are made of

    • Options
    • A. earthen ware
    • B. stone ware
    • C. refractory clay
    • D. terracota
    • E. all the above.
    • Discuss
    • 6. Stainless steel contains

    • Options
    • A. 18% of chromuim and 8% nickel
    • B. 8% of chromium and 18% of nickel
    • C. 12% of chromium and 36% of nickel
    • D. 36% of chromium and 12% of nickel.
    • Discuss
    • 7. The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout

    • Options
    • A. the monsoon
    • B. the winter
    • C. the summer
    • D. none of these.
    • Discuss
    • 8. Pick up the correct statement from the following:

    • Options
    • A. In basic Bessemer process, the steel heats the converter
    • B. In open-hearth process, the furnace heats the steel
    • C. In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore
    • D. all the above.
    • Discuss
    • 9. Bitumen felt

    • Options
    • A. is used as water proofing material
    • B. is used as damp proofing material
    • C. is made from bitumen and hessian fibres
    • D. all the above.
    • Discuss
    • 10. Pick up the correct statement from the following:

    • Options
    • A. In stone arches, the stones are placed with their natural beds radial
    • B. In cornices, the stones are placed with their natural beds as vertical
    • C. In stone walls, the stones are placed with their natural beds as horizontal
    • D. All the above.
    • Discuss


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