Building Materials
In the method of condensation polymerization,

The reaction proceeds with an evolution of hydrogen chloride
Low-molecular substances are removed from the high molecular substance
All of these
The reaction proceeds with an evolution of ammonia

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Building Materials
Priming consists of

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

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Building Materials
Pick up correct statement from the following:

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

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