Q. On the basis of durability test, Forest Research Institute of India, Dehradun, a tree ishighly durable if its average life is more than (Solved)
1. 5 years
2. 10 years
3. 15 years
4. 20 years
- b. 10 years
1. 5 years
2. 10 years
3. 15 years
4. 20 years