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Materials and Construction

Materials and Construction
German silver used for decorative purposes contains maximum percentage of

Zinc
Silver
Copper
Nickel

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Materials and Construction
Carbon supply in pack carburising process is in the form of

Charcoal
Calcium carbide
Graphite
Hydrocarbon oil

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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
In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of

Porcelain
Wood
Steel
Concrete

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Materials and Construction
As the impurities are oxidised, the melting point of iron

Decreases
Remains unchanged
May increase or decrease ; unpredictable
Increases

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Materials and Construction
The behaviour of visco-elastic material is time dependent. This behaviour is commo in __________ materials.

Rubberry
Non-crystalline solid
Crystalline
Non-crystalline organic polymeric

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