Question

Match List I with List II

Choose the correct answer from the options given below:

• (A) - (II), (B) - (III), (C) - (IV), (D) - (I)
• (A) - (III), (B) - (I), (C) - (IV), (D) - (II)
• (A) - (IV), (B) - (III), (C) - (I), (D) - (II)
• (A) - (II), (B) - (IV), (C) - (I), (D) - (III)

Hint:

Remember that Xylia dolabriformis (Irul) and Sal (Shorea robusta) are among the strongest Indian structural timbers.
Salai (Boswellia serrata) is a lightweight packing-grade wood, making it the obvious candidate for "weak wood".

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The strength and mechanical properties of timber determine its suitability for structural applications, railway sleepers, tool handles, or light packaging.
Indian timber species are classified into specific strength classes based on standard mechanical testing of green and seasoned wood.

Step 2: Detailed Explation:
Let's alyze the strength of each timber species in the list:
- Xylia dolabriformis (commonly known as Irul) is a heavy, dense wood with high mechanical strength.
It is classified as an exceptiolly strong wood, making it ideal for heavy construction and railway sleepers.
- Anogeissus latifolia (known as Axlewood or Dhawda) is highly durable and tough.
It is classified as a very strong wood, frequently used for tool handles and structural framing.
- Cedrus deodara (Deodar) is a moderate-density softwood from the Himalayan region.
It is classified as a moderately strong wood, widely valued for building construction due to its tural durability.
- Boswellia serrata (Salai) is a lightweight, low-density wood.
It has low mechanical strength and is classified as a weak wood, primarily used for packaging boxes and paper pulp.
This matching corresponds to:
(A) - (III),
(B) - (I),
(C) - (IV),
(D) - (II),
which aligns with Option (B).

Step 3: Fil Answer
The correct matching sequence is (A) - (III), (B) - (I), (C) - (IV), (D) - (II).