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Building Materials

Building Materials
Forge pig may be converted to wrought iron by

Refining
Rolling
Shingling
Pudding

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Building Materials
During pudding

Molten metal is kept clear of the fuel
Silicon forms a slag
Carbon is converted into carbonic acid gas
All listed here

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Building Materials
Glazing is used to make earthenware

porous
impervious
soft
hard

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Building Materials
Compared to mild steel, cast iron has
(i) High compressive strength
(ii) High tensile strength
(iii) Low compressive strength
(iv) Low tensile strength

(i) and (ii)
(i) and (iv)
(iii) and (iv)
(ii) and (iii)

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Building Materials
Which of the following gradients exerts maximum influence on properties of steel?

iron
manganese
sulphur
carbon

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Building Materials
For sanitary pipes and chemical stonewares,

Salt glazing is used
None of these
Lead glazing is used
Opaque glazing is used

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