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Civil Engineering - Building Materials

Exercise : Building Materials - Section 4
36.
The cast iron when heated to red heat with powdered red haemetite in an oven for increasing its toughness, is converted to
grey cast iron
white cast iron
mottled cast iron
toughed cast iron.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Jhumb bricks are
under burnt
over burnt
kutcha
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Plastic bitumen is generally used for
road pavements
expansion joints
crack fillings
none to these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Pick up the correct statement from the following:
The heating of a material to redness in contact with air, is known as calcination
The property of lime by which it sets or hardens in damp places having no free circulation of air is called setting
The product that remains after calcination of limestone, is called lime
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
The commonly used thinner in oil paints, is
naptha
turpentine
both (a) and (b)
neither (a) nor (b)
none the these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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