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Materials and Construction

Materials and Construction
Vessels made of __________ can be used to store dry chlorine.

Steel or iron
Thermoplastic materials
Nickel
None of these

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Materials and Construction
Presence of silicon in steel

Is in the form of free Si
Indicates that steel is not deoxidised properly
Decreases the blow holes formation tendency in castings
None of these

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Materials and Construction
The hardest material just prior to diamond in Mhos scale is

Carborundum
Corrundum
Calcite
Topax

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Materials and Construction
'Hypersil' is a __________ steel.

High speed
Silicon
Tungsten
Molybdenum

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Materials and Construction
Which of the following metals in not used for coating of the base metal to guard it against corrosion?

Cadmium
Aluminium
Magnesium
Lead

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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 third
One twelfth
One fifth
Half

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