Building Materials - Civil Engineering Questions and Answers

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Stones used for ornamental work must be

Soft

Hard

Light

Heavy

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Red short iron cracks when bent due to the presence of

Sulphur

Carbon

Phosphorus

Silicon

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Forge pig may be converted to wrought iron by

Rolling

Pudding

Shingling

Refining

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If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called

Bessemer pig

Grey or foundry pig

White or forge pig

Mottled pig

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Which of the following should be used for hearting of thicker walls?

Headers

Stretchers

Brick bats

Queen closer

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Seasoning of timber is done

To make it water proof

To paint its surface

To increase its temperature

To remove water

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Pick up the correct statement from the following:

Acid test is done to find out the weathering quality of stones

Attrition test is done to find out the rate of wear of stones which are used in road construction

Crushing test is done to find out the compressive strength of the stone

All the above

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Pick up the correct statement from the following:

Adding 5% to 6% of moisture content by weight, increases the volume of dry sand from 18% to 38%

The bulking of fine sand is more than that of coarse sand

If the percentage content of moisture exceeds 10%, increase in bulk of sand starts increasing

All the above

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Pick up the correct statement from the following:

Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer

Cupola furnace is used for the manufacture of cast iron

Red short iron is of no value for welding purpose

All the above