Methane gas is produced during the scientific process of:

Related Mcqs:

1. Which important greenhouse gas other than methane is being produced from the agricultural fields?

   A. Arsine
   B. SO2
   C. NH3
   D. N2O

2. Goals of scientific range management could be achieved as:

   A. All range lands of Pakistan be developed/managed primarily for livestock production consistent with multiple land use concept
   B. Independent and effective organisations be created at provincial as well as central levels to develop and manage vast rangelands resources
   C. The survey of record of rights, where it has not been carried out yet, be taken in hand as quickly as possible
   D. Preparation of livestock feeds from agro-industrial wastes and by-products be encourages
   E. All of the above

3. Form of forest produced by retaining certain trees of the old crop after regeneration is completed known as:

   A. High forest with standards
   B. Selection system
   C. Two-storied high forest
   D. None of these

4. Form of forest produced by introducing a young crop beneath an existing immature is called:

   A. High forest with standards
   B. Two-storied high forest
   C. Wedge system
   D. None of these

5. The chemical produced by the host plant to protect themselves against fungal infection is:

   A. Toxin
   B. Hormone
   C. Phytotoxin
   D. Phytoalexin

6. Those chemicals which are produced by plants and affect other plants are broadly called:

   A. Depresants
   B. Allomones
   C. Allelochemics
   D. Kairomones

7. Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which lead to:

   A. Photochemical smog
   B. Dry acid deposition
   C. Industrial smog
   D. Wet acid deposition

8. Apart from natural timber, harvested from trees, many wood-based panel products are produced which includes:

   A. Ploywood (including blackboard)
   B. Particle board
   C. Compressed fibreboard
   D. Non-compressed fibreboard
   E. All of the above

9. Carbon monoxide is a poisonous gas, 1% of which in the air can kill a person in:

   A. No time
   B. In ten minutes
   C. In five minutes
   D. In fifteen minutes

10. The earth’s atmosphere contains over _____ % by volume of nitrogen gas:

    A. 58
    B. 68
    C. 78
    D. None of these