Question

Which of the following species are not classified as very heavy woods (density 801-950 kg/cum)? ______________

• A. Albizia lebbek
• B. Acacia nilotica
• C. Anogeissus latifolia
• D. Dalbergia sissoo

Hint:

Dry region trees like Babul and Axle-wood are always much denser than broader-leaved trees like Albizia.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
Forest products are classified by density. The question asks to identify which of the provided species does *not* fall into the "very heavy" class (801-950 $kg/m^3$).

Step 2: Detailed Explanation:

• Wood Density Classification: Wood is categorized into classes like Light ($<480$), Moderately Heavy (481-640), Heavy (641-800), and Very Heavy (801-950).

• Anogeissus latifolia (C) and Acacia nilotica (B): These are well-known desert/dry forest species with extremely hard and dense wood, often exceeding $850\text{--}900\ kg/m^3$. They are definitively "Very Heavy."

• Dalbergia sissoo (D): Shisham has a density around $800\text{--}830\ kg/m^3$, placing it at the lower threshold of "Very Heavy."

• Albizia lebbek (A): Known as Siris or Kokko. Its density typically ranges from $600$ to $750\ kg/m^3$. This places it in the "Heavy" category, but not the "Very Heavy" category.

Step 3: Final Answer:
Albizia lebbek is not classified as "Very Heavy."