Construction Materials Online Test – Paper 3

1. The pigment used in paints for corrosion resistance is

2. *In paints, the pigment is responsible for:

3. In the briquette test, the seven-day tensile strength of good Portland cement should not be less than

4. German silver is an alloy of

5. The explosive not used for blasting the rocks underwater is

6. *The process of heating the limestone to redness in contact with air is termed

7. *Specific gravity for most of the ordinary building stone lines between

8. The constituent responsible for the strength in granite is

9. *Seasoning of timber is done for

10. If fine sand or ash is sprinkled on the inner surface of the mould, the bricks are known as

11. The bricks are properly soaked in water before use for the following reason

12. Texture of sandstone is

13. *The kiln which may work regularly throughout the year is called

14. The quick lime as it comes from kilns is called

15. *Stainless steel metal is an alloy of

16. *Plaster of Paris can be obtained from the calcination of

17. The trees yielding hard wood is

18. *The trunk of the tree left after cutting all the branches is known as

19. *The paints used in aircraft are

20. During compressive strength load is applied at the rate of

21. Granite is not suitable for ordinary building purposes because

22. *A heavy stone is suitable for:

23. *Quartzite is a

24. Good quality building stones should not contain soluble salts more than

25. *According to IS399-1963, the weight of the timber is specified at

26. *The red color obtained by the bricks is due to the presence of

27. As per IS specification, the maximum final setting time for ordinary Portland cement

28. Basalt (TBE-GPI) is a

29. Tripoli is a type of

30. *Lime concrete is used in

31. The discoloration and formation of white deposits due to the presence of a relatively large proportion of soluble salts in bricks is known as

32. Lime having high calcium oxide content, which can set and become hard only in the presence of CO2 from the atmosphere, is known as

33. The minimum hardness number for marble is about

34. *Galvanizing means

35. Lacquer paints are

36. The building stone used for bridge piers and columns is

37. *Workability is tested by

38. Based on its dry weight, a freshly felled tree may contain water

39. The ordinary cement used in general construction is:

40. The types of bricks used for the lining of the furnace/combustion chamber are

41. Which of the following wood has the maximum resistance to white ants

42. *Which constituent of the cement, upon the addition of water, sets and hardens first

43. Identify the process responsible for the formation of sedimentary rocks

44. The amount of local brick required for one m3 masonry (As per NS norms) is

45. The solidification of molten magma within the earth's crust results in the formation of

46. The standard size of the brick as per the Indian standard is

47. The main function of alumina in brick earth is

48. *The weight loss on heating of bitumen used for pavement should not be more than

49. *The broken portion of brick is called

50. Inert filler/adulterant is used in paint to