Building Materials - Civil Engineering Questions and Answers

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In order of increasing percentage of silica, the correct sequence is

Sandy clay, calcareous clay, pure clay

Calcareous clay, pure clay, sandy clay

Pure clay, sandy clay, calcareous clay

None of these

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The main ingredients of Portland cement are

Lime and silica

Lime and alumina

Silica and alumina

Lime and iron

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Jumper is a tool used for

Testing of stones

Quarrying of stones

Dressing of stones

None of the above

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Durability of building stone is affected by its

Chemical composition

Texture

Resistance to atmosphere

All the above

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

Less than 1

Equal to 1

Greater than 1

Less than 1 in beams but greater than 1 in channels

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According to ISI, bitumen is classified into

2 grades

4 grades

8 grades

10 grades

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Cast steel is manufactured by

Cementation process

Crucible process

Bessemer process

Open hearth process

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A good quality stone absorbs water less than

5 %

10 %

15 %

25 %

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A stone is rejected if it absorbs water more than

5 %

10 %

15 %

20 %