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Which chemical is used in the coating of timber surface in Sir Abel’s process?

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Which chemical is used in the coating of timber surface in Sir Abel’s process?

(a) Dilute solution of sodium silicate

(b) Concenterated solution of sodium silicate

(c) Dilute solution of aluminium nitrate

(d) Concenterated solution of aluminium nitrate

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Question is taken from Timber Partitions in section Cavity Walls & Partition Walls of Construction & Building Materials

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Correct choice is (a) Dilute solution of sodium silicate

Explanation: Dilute solution of sodium silicate is used in the coating of the timber surface in Sir Abel’s process. This is a method that is adopted to make timber more fire-resistant.

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