Building Materials
Pick up correct statement from the following:

Fibre boards are obtained by impregnating a resin product on fibres
All listed here
Fibre boards are used for thermal and acoustic control
Fibre boards are used for light weight standing members

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Building Materials
Cast iron

All listed here
May contain 2 to 5 per cent of carbon with other impurities
Is obtained by purifying pig iron
Is manufactured in required shapes

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Building Materials
Rapid hardening cement attains early strength due to

Excess percentage of gypsum
Lesser proportion of lime grounded finer than normal cement
Lesser proportion of lime grounded coarser than normal cement
Larger proportion of lime grounded finer than normal cement

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