Concrete Technology MCQ Paper – 5

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1. Too wet concrete may cause

2. Addition of pozzolana to cement causes

3. Separation of coarse aggregates from mortar during transportation, is known

4. Shrinkage in concrete can be reduced by using

5. The commercial name of white and coloured cement in India, is

6. To hydrate 500kg of cement full water needed, is

7. For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

8. The type of aggregates of same nominal size, which contain less voids when compacted, are

9. For the construction of cement concrete dams, the maximum permissible size of the aggregates, is

10. Permissible compressive strength of M 200 concrete grade is

11. For preparing a test-specimen, it is necessary

12. For concreting tunnel linings, transportation of concrete is done by

13. The operation of removing humps and hollows of uniform concrete surface, is known as

14. The void ratio of

15. An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. seive No. 9, more than

16. The top diameter, bottom diameter and the height of a slump mould are :

17. Workability of concrete mix with low water cement ratio is determined by

18. While designing an air entrained concrete

19. Concrete containing

20. The bulk density of aggregates, is generally expressed as