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Building Materials

Building Materials
Gypsum consists of

H₂S and CO₂
CO₂ and calcium
CaSO4 and H₂O
Lime and H₂O

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Building Materials
Lime stone is not a

Aqueous rock
Stratified rock
Metamorphic rock
Sedimentary rock

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

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Building Materials
The moisture content in a well seasoned timber is

10 % to 12 %
4 % to 6 %
100 %
15 % to 20 %

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Building Materials
The compound of Portland cement which reacts immediately with water and also sets first is

Tetra calcium alumino ferrite
Tri-calcium aluminate
Tri-calcium silicate
Di-calcium silicate

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Building Materials
Which of the following trees yields hard wood?

Pine
Shishum
Deodar
Chir

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