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Building Materials

Building Materials
Pig iron is manufactured from the ores by

Dressing
Calcination and roasting
All of these
Smelting

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Building Materials
Calcination of iron ores is done

To remove moisture
All listed here
To remove carbonic acid
By roasting in heaps

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Building Materials
Quick lime is

Calcium carbonate
Calcium hydroxide
Calcium oxide
None of these

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Building Materials
Plastic asphalt is

A mixture of cement and asphalt
Used as a water proofing layer over roof
A natural asphalt
A refinery product

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Building Materials
The method of addition polymerization is used for obtaining:

Polystyrene
All of these
Polyvinylchloride
Polypropylene

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Building Materials
Which of the following bricks are used for lining of furnaces?

Over-burnt bricks
First class bricks
Refractory bricks
Under-burnt bricks

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