Civil Engineering - Building Materials

41.
The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:
radial shakes
heart shakes
wind cracks
twisted fibres.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

42.
The process of decarbonising the pig iron completely and then adding proper percentage of carbon for manufacturing steel, is called
Cementation process
crucible process
Bessemer process
Open hearth process.
Answer: Option
Explanation:
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43.
In paints, the pigment is responsible for
durability
colour
smoothness
glassy face
none of these.
Answer: Option
Explanation:
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44.
The operation of removal of impurities or clay adhering to iron ores, is known as
dressing
calcination
roasting
smelting.
Answer: Option
Explanation:
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45.
If water required for 1 bag of cement is 30 litres, the water cement ratio is :
0.40
0.50
0.60
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.