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Materials and Construction

Materials and Construction
The softest material just next to talc in the Mho's scale is

Quartz
Fluorite
Feldspar
Gypsum

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Materials and Construction
Which one has the maximum tensile strength out of the following?

Pig iron
Nodular cast iron
Grey cast iron
White cast iron

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Materials and Construction
Which of the following is the hardest?

Ferrite
Pearlite
Austenite
Cementite

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Materials and Construction
In a plate type heat exchanger, heat transfer plates are never made of

Titanium
Cast iron
Hastealloy C
Stainless steel

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Materials and Construction
Reactor used in the production of polyvinyl chloride (PVC) is made of

Aluminium
Lead
Tantalum
Nickel or glass lined steel

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Materials and Construction
The presence of impurities in iron

Decreases its melting point
Increases its melting point
Does not affect its melting point
Makes it malleable

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