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Building Materials

Building Materials
Wrought iron is manufactured from pig iron by

Shingling
Pudding
All of these
Refining

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Building Materials
The process of decarbonising the pig iron completely and then adding proper percentage of carbon for manufacturing steel, is called

Open hearth process
Bessemer process
Crucible process
Cementation process

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Building Materials
The initial setting time of lime-pozzolana, is

120 minutes
30 minutes
60 minutes
90 minutes

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Building Materials
Glazing is used to make earthenware

hard
impervious
soft
porous

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Building Materials
For the manufacture of plywood, veneers are placed so that grains of adjacent veneers

Parallel
Inclined at 45°
Run at right angles
Inclined at 60°

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Building Materials
Which one of the following polymers is obtained from condensation polymerization?

Phenol formaldehyde
All of these
Carbamide
Melamine-formaldehyde

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