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Materials and Construction

Materials and Construction
Sheardising process is used for

Heat treatment of high speed steel
None of these
Cold working on metals
Surface coating

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Materials and Construction
In SO₃ absorber (Contact Process), packing material used is of

Karbate
Chemical stoneware
Mild steel
Cast iron

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Materials and Construction
The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability?

Wrought iron
Aluminium
Lead
Copper

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Materials and Construction
Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)₂. Lead pipes are readily corroded by

None of these
v
Acetic acid
Dilute HC₁

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Materials and Construction
Thermosetting resins are those polymers, which

Do not take on a permanent set
Do not increase in plasticity with rise in temperature
Allow slip to occur between molecules
None of these

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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?

Lead
Cadmium
Aluminium
Magnesium

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