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Materials and Construction

Materials and Construction
Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about

One fifth
Half
One twelfth
One third

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Materials and Construction
The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon.

0.2
2
4
8

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Materials and Construction
Which of the following comprises of hydrocarbons?

Rubber
Mica flakes
None of these
Glass

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Materials and Construction
Babbit metal (used for making bearings) comprises of

Zinc and aluminium
Saw dust and iron dust mixture
Mainly tin (85%) and lead
Copper and aluminium

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Materials and Construction
Cast iron and steel pipes are produced by __________ casting.

Investment
True centrifugal
Slush
Die

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Materials and Construction
Silicone rubber is not resistant to the corrosive action of

Ether
Both B and C
Sulphuric acid (95%)
Sulphuric acid (10%)

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