Civil Engineering - Building Materials
Exercise :: Building Materials - Section 5
21. |
Pick up the correct statement from the following: |
A. |
Horn blende mineral is brittle | B. |
Muscovite is also known as white mica and potashmica | C. |
Biotite is also known as blackmica | D. |
All the above. |
Answer: Option D
Explanation:
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22. |
The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called |
A. |
Plutonic rocks | B. |
Hypabyssal rocks | C. |
Volcanic rocks | D. |
Ignoeous rocks. |
Answer: Option B
Explanation:
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23. |
The base material for distemper, is |
A. |
chalk | B. |
lime | C. |
lime putty | D. |
cement wash. |
Answer: Option A
Explanation:
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24. |
The thermosetting plastic |
A. |
becomes rigid when moulded at suitable pressure and temperature | B. |
at 127°C to 177°C permanently set and further application of heat does not soften it | C. |
charrs at 343°C | D. |
All the above. |
Answer: Option D
Explanation:
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25. |
Pick up the synthetic resin from the following: |
A. |
Malamine resin | B. |
Phenolic resin | C. |
Resorcinol resin | D. |
Urea resin | E. |
All of these. |
Answer: Option E
Explanation:
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