Civil Engineering - Building Materials
Exercise :: Building Materials - Section 4
| 16. |
Cement paints usually |
| A. |
contain hydrated lime | | B. |
contain 5% to 10% colour pigments | | C. |
are prepared with white cement | | D. |
contain 5% sodium chloride | | E. |
all the above. |
Answer: Option E
Explanation:
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| 17. |
The cement becomes unsound by the presence of excess |
| A. |
sulphur | | B. |
magnesia | | C. |
lime | | D. |
All of these. |
Answer: Option D
Explanation:
|
| 18. |
The kiln which may work throughout the year, is |
| A. |
Clamp | | B. |
Bull's kiln | | C. |
Hoffman's kiln | | D. |
none of these. |
Answer: Option C
Explanation:
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| 19. |
The minimum compressive strength of 1st class bricks should be |
| A. |
75 kg/cm2 | | B. |
90 kg/cm2 | | C. |
100 kg/cm2 | | D. |
120 kg/cm2 | | E. |
130 kg/cm2. |
Answer: Option C
Explanation:
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| 20. |
A volatile substance added to a paint to make its application easy and smooth, is known as |
| A. |
base | | B. |
solvent | | C. |
vehicle | | D. |
none to these. |
Answer: Option B
Explanation:
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