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Which of the following makes the timber look sound but might fail it without pre-warning?

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in Basic Civil Engineering by (111k points)
Which of the following makes the timber look sound but might fail it without pre-warning?

(a) Marine borers

(b) Wasps

(c) White ants

(d) Beetles

I had been asked this question in exam.

This key question is from Defects and Preservation of Timber in division Materials for Construction of Basic Civil Engineering

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Best answer
Right choice is (c) White ants

For explanation I would say: Beetles make thousands of deep small holes while the white ants or termites develop tunnels inside the timber in various directions.

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