Civil Engineering - Building Materials
Exercise :: Building Materials - Section 3
| 21. |
Pick up the correct statement from the following: |
| A. |
Corrugated sheet iron is made by passing plain sheets between grooved rollers | | B. |
Strength and stiffness of corrugated sheets are considerably increased | | C. |
Corrugated sheets are generally gal-venised to protect iron from corrosion by rust | | D. |
Corrugated sheets are generally used on slanting roofs | | E. |
all the above. |
Answer: Option E
Explanation:
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| 22. |
Quick setting cement is produced by adding |
| A. |
less amount of gypsum in very fine powdered form | | B. |
more amount of gypsum in very fine powdered form | | C. |
aluminium sulphate in very fine powdered form | | D. |
pozzolana in very fine powdered form | | E. |
none of these. |
Answer: Option C
Explanation:
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| 23. |
Duco is one of the patent forms of |
| A. |
emulsion paints | | B. |
plastic paints | | C. |
bituminous paints | | D. |
aluminium paints | | E. |
cellulose paints. |
Answer: Option E
Explanation:
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| 24. |
Pick up the correct statement from the following: |
| A. |
The substance which consists of one primary chemical, is known as monomer | | B. |
The polymer consists of thousands of monomers joined together | | C. |
The polymer molecule is called macro-molecule | | D. |
A polymetric material consists of a large number of long-chain molecules | | E. |
All the above. |
Answer: Option E
Explanation:
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| 25. |
Bulking of sand is caused due to |
| A. |
surface moisture | | B. |
air voids | | C. |
viscosity | | D. |
clay contents | | E. |
all the above. |
Answer: Option A
Explanation:
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