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Materials and Construction

Materials and Construction
Which of the following has the poorest wel-dability?

Wrought iron
Low carbon steel
High-carbon steel
Mild steel

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Materials and Construction
When iron is rusted, it is

Reduced
Converted to a fine powder
None of these
Oxidised

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Materials and Construction
Plasticisers are added to polymers to improve their

Tensile strength
Softness & flexibility
Alkali resistance
Acid resistance

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Materials and Construction
Nickel (56%) and molybdenum (17%) alloys are called

Bronzes
Hastealloy C
Inconel
Monel

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Materials and Construction
Mild steel is used for making

Die block
Channels
Drop forging
Fish plates

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Materials and Construction
Purity of electrical grade aluminium should be ≥ __________ percent.

85
95
99.5
90

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