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Materials and Construction

Materials and Construction
Fatigue failure of a material results from __________ stress.

Compressive
Tensile
Fluctuating
None of these

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Materials and Construction
Bush bearings are made of

Phosphorous bronze
None of these
Mild steel
White metal alloys

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Materials and Construction
H₂SO₄ (< 50% concentration) is corrosive to

Copper, cast iron & high silicon iron (14% Si)
Aluminium, mild steel, stainless steel, concrete & tin
Rubber (butyl and hard), silicone rubber & teflon
Glass, graphite, porcelain & stoneware

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Materials and Construction
Cast iron detachable joint is used in __________ pipes.

Asbestos cement
Reinforced cement concrete
Steel
Cast iron

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Materials and Construction
Low carbon steels are those in which carbon percentage is around

0.1 to 0.35
1.5 to 2
0.4 to 0.7
0.8 to 1.5

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Materials and Construction
Most suitable material of construction for the storage of concentrated nitric acid is

Aluminium or chromium alloys (Cr > 18% for cold acid)
Cast iron
Monel
Karbate

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