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Building Materials

Building Materials
A badly mixed cement concrete results in

Segregation
Bleeding
Honey combing
None of these

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Building Materials
Invar contains

24% of nickel
12% of nickel
30% of nickel
36% of nickel

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Building Materials
The ratio of the thickness of web to that of flange of steel rolled structural beams and channels is

Less than 1 in beams but greater than 1 in channels
Less than 1
Equal to 1
Greater than 1

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Building Materials
The minimum compressive strength of 2nd class bricks should be

100 kg/cm²
75 kg/cm²
120 kg/cm²
90 kg/cm²

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Building Materials
Asbestos cement

Warps due to changes in humidity
All of these
Is brittle
Strength is lowered when saturated by water

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Building Materials
Asbestos is

An incombustible fire proof material
An organic substance
Corrugated sheet used for roofing
All of these

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