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Civil Engineering - Building Materials

Exercise : Building Materials - Section 3
21.
Pick up the correct statement from the following:
Corrugated sheet iron is made by passing plain sheets between grooved rollers
Strength and stiffness of corrugated sheets are considerably increased
Corrugated sheets are generally gal-venised to protect iron from corrosion by rust
Corrugated sheets are generally used on slanting roofs
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Quick setting cement is produced by adding
less amount of gypsum in very fine powdered form
more amount of gypsum in very fine powdered form
aluminium sulphate in very fine powdered form
pozzolana in very fine powdered form
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Duco is one of the patent forms of
emulsion paints
plastic paints
bituminous paints
aluminium paints
cellulose paints.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Pick up the correct statement from the following:
The substance which consists of one primary chemical, is known as monomer
The polymer consists of thousands of monomers joined together
The polymer molecule is called macro-molecule
A polymetric material consists of a large number of long-chain molecules
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Bulking of sand is caused due to
surface moisture
air voids
viscosity
clay contents
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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