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BUILDING MATERIALS

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

Lime stone
Granite
Marble
Compact sand stone

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Building Materials
Addition of pozzolana to ordinary Portland cement increases

Shrinkage
Permeability
Bleeding
Heat of hydration

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

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

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

Lime stone
Slate
Quartzite
Marble

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

30 minutes
10 hours
6 hours
1 hour

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