Building Materials
Excess of silica in brick earth results in

enhancing the impermeability of bricks
loss of cohesion
cracking and warping of bricks
None of these

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Building Materials
Pick up correct statement from the following:

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

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