1. Trees are generally classified, based on the mode of growth into:
2. What is the life time of a moderately durable timber?
Correct Answer is : 5-10 years
3. Which of the following is an example of soft wood?
Correct Answer is : Deodar
4. IS 3629-1966 classifies timber into 3 classes based on:
Correct Answer is : Average life
5. Which of the following is a type of non-refractory timber?
Correct Answer is : Semul