Timber MCQ with answer and solution

Concept

A loose knot is an early stage of a dead knot. Its fibres are not firmly held by the surrounding wood.

Step-by-step solution

1. A knot is the base of a branch buried in the tree trunk. 2. Tight knot: firmly fixed in the surrounding wood. 3. Dead knot: the branch died, and the knot is not joined to the surrounding wood. 4. Loose knot: the fibres are not firmly held. It is the preliminary stage of a dead knot. 5. So the answer is (B) Loose knot.

Explanation

When a branch starts dying, the knot loses its firm grip on the surrounding wood. This loose knot later becomes a dead knot that can fall out. So the preliminary stage of a dead knot is a loose knot.

Why the other options are wrong

A: A tight knot is firmly held, so it is the opposite case. C: A dead knot is the final stage, not the preliminary stage. D: A round knot is named for its shape (cut across the branch), not for how firmly it is held.

Shortcut

Loose comes first, then dead.

Common mistake

Choosing 'Dead knot' because the question mentions dead knot.