It has been possible to raise the yield of resin from chir pine from the existing 1.5 kg per tree to 3.5 kg on the average per tree by using the American Bark Hack method in conjunction with ______ sulfuric acid:

Related Mcqs:

1. Wood of chir pine and eucalypts has been found useful for _________.

   A. Pulp
   B. Paper
   C. Both (a) & (b)
   D. None of these

2. Chir pine nursery is:

   A. To find out the growth response of chirpine seeds in different soil mixtures, effect of fertilizer, and suitable type of containers
   B. The best season for sowing the seed; and to find out optimum water regime for quick germination and growth
   C. Both (a) & (b)
   D. None of these

3. Pinus roxburghil (Chir pine) period of ripening of seed is:

   A. April – May
   B. September – November
   C. February – April
   D. None of these

4. The oldest known living tree is the Bristlecone pine named “Methusela” at 3050 m (10,000 ft) in the ________ , confirmed as 4700 years old:

   A. California
   B. Washington
   C. New York
   D. None of these

5. The earliest species of tree still surviving is the Maidenhair tree (Ginkgo biloba) of Zhexiang, ______, which first appeared about 165,000,000 years ago, during the Jurassic era:

   A. Korea
   B. Japan
   C. China
   D. Malaysia

6. Tree marriages is a symbolic nuptial ceremony or union of a person with a tree and is widespread in _________.

   A. India
   B. China
   C. Malaysia
   D. Japan

7. Forage yield of grass depends on soil moisture after burning. In wet areas when there is enough presipitation after burning, forage yield can be increased by ________

   A. 50 percent
   B. 60 percent
   C. 70 percent
   D. 80 percent

8. Chir forests are near the western limit of their range in Pakistan and they extend eastwards upto _________

   A. Bhutan
   B. Sri Lanka
   C. Nepal
   D. Afghanistan

9. Chir (Pinus rixburghii) utilization of timber:

   A. Roofing, flooring, railway sleepers
   B. Transmission poles, cheap joinery
   C. Furniture making match
   D. All of the above

10. Functions of bark are:

    A. As a protective material against extreme conditions of temperature
    B. If the temperature is very light or very cold whatever the case may be
    C. Both (a) & (b)
    D. None of these