Building Materials
Which of the following represents a metamorphic rock?
(i) Slate
(ii) Shale
(iii) Quartzite

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

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Building Materials
Priming consists of

None to these
One part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
One part of white lead, 8 parts of chalk and one part of linseed oil
8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil

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