Building Materials MCQ Question with Answer

Building Materials MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 57
The age of a tree can be known by examining

Cambium layer

Annular rings

Medullary rays

Heart wood

Question No : 58
Excess of alumina in brick earth makes the brick

Impermeable

Brittle and weak

To lose cohesion

To crack and warp on drying

Question No : 59
Based on flow quality, the sequence of pipes is

A.C. pipes, G.I. pipes, C.I. pipes, PVC pipes

C.I. pipes, G.I. pipes, A.C. pipes, PVC pipes

C.I. pipes, G.I. pipes, PVC pipes, A.C. pipes

None of these

Question No : 60
Pick up the correct statement from the following:

Melamine is obtained from calcium carbide

Formaldehyde is prepared synthetically from methane

The melamine when reacted with formaldehyde forms the melamineformaldehyde resin

All the above

Question No : 61
Blister steel

Is obtained by cementation process

Is full of fissures and cavities

Can be easily welded

All the above

Question No : 62
Pick up the correct statement from the following:

Rusting is caused due to combined action of air, moisture and carbon dioxide

During rusting, first ferrous bicarbonates are formed

On further oxidation ferrous bicarbonates get converted to ferric bicarbonates

All the above

Question No : 63
Wrought iron is used for

Structural works in beams

Small sized water pipes

Columns and struts

None to these