Building Materials
Sandstone is a
(i) Sedimentary rock
(ii) Aqueous rock
(iii) Siliceous rock

Both (i) and (ii)
Both (i) and (iii)
Only (i)
All (i), (ii) and (iii)

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Building Materials
Plastic

Consists of natural or synthetic binders
All listed here
Finished products are rigid and stable at normal temperature
Is an organic substance

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