Civil Engineering - Building Materials
Exercise :: Building Materials - Section 4
31. |
Pick up the correct statement from the following: |
A. |
The baked earth is called terra-cotta | B. |
The articles prepared from clay which is burnt at low temperature and cooled down slowly, are called earthen-ware | C. |
The articles prepared from refractory clays which as mixed with stone and crushed pottery, are called stone ware | D. |
The articles prepared from fine earthen ware which is white, thin and semi-transparent, are called procelain | E. |
All the above. |
Answer: Option E
Explanation:
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32. |
Calcination of iron ores is done |
A. |
to remove moisture | B. |
to remove carbonic acid | C. |
by roasting in heaps | D. |
after dressing | E. |
all the above. |
Answer: Option E
Explanation:
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33. |
Strength of cement concrete primarily depends upon |
A. |
quality of water | B. |
quantity of aggregate | C. |
quantity of cement | D. |
water-cement ratio. |
Answer: Option D
Explanation:
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34. |
Rapid hardening cement contains |
A. |
Tri-calcium silicate | B. |
Tri-calcium aluminate | C. |
Tetra-calcium alumino-ferrite | D. |
Dicalcium silicate. |
Answer: Option A
Explanation:
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35. |
Bitumen emulsion is |
A. |
a liquid containing bitumen in suspension | B. |
a paint | C. |
used as anti-corrosive paint | D. |
all the above. |
Answer: Option D
Explanation:
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