Civil Engineering – Concrete Technology Mock test – 3

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

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