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  • Question
  • Permissible compressive strength of M 150 concrete grade is


  • Options
  • A. 100 kg/cm2
  • B. 150 kg/cm2
  • C. 200 kg/cm2
  • D. 250 kg/cm2
  • E. 300 kg/cm2

  • Correct Answer
  • 150 kg/cm2 


  • Concrete Technology problems


    Search Results


    • 1. For the construction of cement con-certe dams, the maximum permissible size of the aggregates, is

    • Options
    • A. 40 mm
    • B. 50 mm
    • C. 60 mm
    • D. 70 mm
    • E. 80 mm
    • Discuss
    • 2. Water cement ratio is

    • Options
    • A. volume of water to that of cement
    • B. weight of water to that of cement
    • C. weight of concrete to that of water
    • D. volume of concrete to that of water
    • E. both (a) and (b) of the above.
    • Discuss
    • 3. Workability of concrete mix with low water cement ratio is determined by

    • Options
    • A. tensile strength test
    • B. slump test
    • C. compaction factor test
    • D. flexural strength test
    • E. none of these.
    • Discuss
    • 4. An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. seive No. 9, more than

    • Options
    • A. 5%
    • B. 10%
    • C. 15%
    • D. 20%
    • E. 25%
    • Discuss
    • 5. Separation of water or water sand cement from a freshly concrete, is known

    • Options
    • A. bleeding
    • B. creeping
    • C. segregation
    • D. flooding
    • E. none of these.
    • Discuss
    • 6. Pick up the correct statement from the following:

    • Options
    • A. An increase in water content must be accompanied by an increase in cement content
    • B. Angular and rough aggregates reduce the workability of the concrete
    • C. Large size aggregates increase the workability due to lesser surface area
    • D. The slump of the concrete mix decreases due to an increase in temperature
    • E. All the above.
    • Discuss
    • 7. The top diameter, bottom diameter and the height of a slump mould are :

    • Options
    • A. 10 cm, 20 cm, 30 cm
    • B. 10 cm, 30 cm, 20 cm
    • C. 20 cm, 10 cm, 30 cm
    • D. 20 cm, 30 cm, 10 cm
    • E. 30 cm, 20 cm, 10 cm
    • Discuss
    • 8. For concreting tunnel linings, tran-portation of concrete is done by

    • Options
    • A. pans
    • B. wheel borrows
    • C. containers
    • D. pumps
    • E. belt conveyors.
    • Discuss
    • 9. The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as

    • Options
    • A. low-heat Portland cement
    • B. rapid hardening Portland cement
    • C. Portland blast slag cement
    • D. Portland pozzolana cement
    • E. none of these.
    • Discuss
    • 10. Saw dust can be rendered chemically inert by boiling it in water containing

    • Options
    • A. ferrous sulphate
    • B. potassium chloride
    • C. ammonia
    • D. nitric acid
    • E. sulphuric acid.
    • Discuss


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