Question:

Which of the following species of wood is non refractory woods?

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Non-refractory woods are typically low-density, fast-growing softwoods or light hardwoods.
Boswellia serrata (Salai) is widely used in packaging and matchwood because of its easy seasoning properties.
  • Anogeissus latifolia
  • Syzygium cumini
  • Boswellia serrata
  • Termilia alata
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The Correct Option is C

Solution and Explanation

Step 1: Understanding the Concept:
Wood seasoning involves the controlled removal of moisture from timber to prevent defects.
Timbers are classified into three classes of refractoriness based on their behavior during seasoning: highly refractory (Class A), moderately refractory (Class B), and non-refractory (Class C).

Step 2: Detailed Explation:

- Highly refractory woods (Class A) dry very slowly and are highly prone to splitting, surface cracking, and warping if dried too rapidly.
Examples include Anogeissus latifolia and Termilia alata.
- Moderately refractory woods (Class B) can be seasoned quickly without defects if they are protected from rapid drying winds and direct sun exposure.
An example is Syzygium cumini.
- Non-refractory woods (Class C) dry rapidly and are highly resistant to developing cracks, splits, or warping during seasoning.
Boswellia serrata (commonly known as Salai) is a lightweight, low-density wood with open pore structures.
It seasons very rapidly with minimal drying defects, making it a classic example of a non-refractory wood.

Step 3: Fil Answer

Therefore, Boswellia serrata is categorized as a non-refractory wood.
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