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Sands of zone I are:

A. Course

B. Medium

C. Medium to fine

D. Fine

Correct Answer : A.


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  1. Workability of concrete for a given water content is good if the aggregates, are
  2. Workability of concrete mix with low water cement ratio is determined by
  3. The ratio of the diameter of reinforcing bars and the slab thickness is
  4. An aggregate is known as cyclopean aggregate if its size is more than
  5. Workability of concrete is measured by
  6. For given water content, workability decreases if the concrete aggregates contain an excess of
  7. For a simply supported beam of span 15 m, the minimum effective depth to satisfy the vertical deflection…
  8. For the design of retaining walls, the minimum factor of safety against overturning is taken as
  9. Select the incorrect statement
  10. In counterfort type retaining walls (i) The vertical slab is designed as a continuous slab (ii) The…
  11. Allowable shear strength of concrete, depends upon
  12. Cement used for normal concrete construction, is obtained by burning a mixture of
  13. After casting, an ordinary cement concrete on drying
  14. Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is
  15. For walls, columns and vertical faces of all structural members, the form work is generally removed…
  16. For preparing ordinary concrete, the quantity of water used, is
  17. Horizontal construction joints in concrete walls are generally provided at
  18. For preparing a test-specimen, it is necessary
  19. Too wet concrete may cause
  20. For road pavements, the cement generally used, is
  21. The minimum cover in a slab should neither be less than the diameter of bar nor less than
  22. Efflorescence in cement is caused due to an excess of
  23. Pick up the correct statement from the following:
  24. The strength and quality of concrete, depend upon:
  25. Batching error means inaccuracy in the quantity of
  26. Concrete mainly consists of
  27. According to IS : 382-1963, a good aggregate should be
  28. Most common method of pre-stressing used for factory production is
  29. Bulking of sand is
  30. Modulus of elasticity of steel as per IS: 4561978 shall be taken as