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BUILDING MATERIALS

Building Materials
Which of the following has more fire resisting characteristics?

Granite
Compact sand stone
Marble
Lime stone

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Building Materials
Addition of pozzolana to ordinary Portland cement increases

Heat of hydration
Bleeding
Permeability
Shrinkage

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Building Materials
The proportions of lime and sand in the mortar normally used in brick construction are

1 : 4
1 : 8
1 : 2
1 : 6

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Building Materials
Which of the following metamorphic rocks has the most weather resisting characteristics?

Lime stone
Marble
Quartzite
Slate

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Building Materials
As per IS specifications, the maximum final setting time for ordinary Portland cement should be

1 hour
6 hours
10 hours
30 minutes

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