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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