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Question
Dry rot in timber is caused by
A.
lack of ventilation
B.
lack of light
C.
immersion in water
D.
alternate wet and dry atmosphere
Answer ( Option A)

lack of ventilation

Solution

The dry rot occurs where there is no free circulation of air. The other causes are unseasoned wood and improper storage. The most favourable conditions for the rapid growth of fungus responsible for dry rot are absence of sunlight, dampness, presence of sap, stagnant air and warmth. Therefore lack of ventilation is the best choice.

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