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:
|
| 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:
|
| 23. |
The base material for distemper, is |
| A. |
chalk | | B. |
lime | | C. |
lime putty | | D. |
cement wash. |
Answer: Option A
Explanation:
|
| 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:
|
| 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:
|
