Civil Engineering – Concrete Technology Mock test – 3



Welcome to your Concrete Technology Mock test - 3
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You have only 20 mins to complete the test (26 Questions)
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1. The top diameter, bottom diameter and the height of a slump mould are :
2. The most useless aggregate is one whose surface texture is
3. The condition not applicable to water cement ratio law, is
4. Pick up the incorrect statement from the following:
5. Water cement ratio is
6. The diameter of the Vicat plunger is 10 mm and its length varies from
7. The grade of concrete M 150 means that compressive strength of a 15 cm cube after 28 days, is
8. Saw dust can be rendered chemically inert by boiling it in water containing
9. If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed
10. High temperature
11. The aggregate containing moisture in pores and having its suface dry, is known as
12. Allowable shear strength of concrete, depends upon
13. Slump test of concrete is a measure of its
14. To obtain a very high strength concrete, use very fine grained
15. The type of aggregates of same nominal size, which contain less voids when compacted, are
16. The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is
17. For the construction of cement con-certe dams, the maximum permissible size of the aggregates, is
18. Permissible compressive strength of M 200 concrete grade is
19. Efflorescence in cement is caused due to an excess of
20. If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the output of a concrete mixer of 150 litre capacity, is
21. Workability of concrete mix with low water cement ratio is determined by
22. The operation of removing humps and hollows of uniform concrete surface, is known as
23. For concreting tunnel linings, tran-portation of concrete is done by
24. An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. seive No. 9, more than
25. 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
26. To hydrate 500kg of cement full water needed, is









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