Civil Engineering - Building Materials

21.
Pick up the correct statement from the following:
Horn blende mineral is brittle
Muscovite is also known as white mica and potashmica
Biotite is also known as blackmica
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called
Plutonic rocks
Hypabyssal rocks
Volcanic rocks
Ignoeous rocks.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
The base material for distemper, is
chalk
lime
lime putty
cement wash.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

24.
The thermosetting plastic
becomes rigid when moulded at suitable pressure and temperature
at 127°C to 177°C permanently set and further application of heat does not soften it
charrs at 343°C
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
Pick up the synthetic resin from the following:
Malamine resin
Phenolic resin
Resorcinol resin
Urea resin
All of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.