Sardar Krushinagar Dantiwada Agricultural Uiversity 2010 Other Bachelor

Multiple option ques.
(For Competitive Exam)
Renewable Eneregy & Enviornmental Engineering

1. Which of the subsequent is abiotic?
a. grass
b. birds
c. water
d. apples

2. The scientific base for environmental science is ___.
a. Ecology
b. Chemistry
c. Zoology
d. Meteorology

3. The region existing ranging from 2 ecosystems which contain species of both ecosystems is __.
a. ecotone
b. energy chain
c. ecology
d. ecosystem

4. The earth contains a thin region known as the biosphere, in which life exists. the 3 parts of the biosphere are:
a. hydrosphere, lithosphere & space
b. atmosphere, hydrosphere & lithosphere
c. atmosphere, hydrosphere & space
d. lithosphere, space & land


5. Birds, fox, ants, clover and trees are all ___ factors.
a. abiotic
b. carbohydrate
c. aquatic
d. biotic

6. The earth is covered by __ percent water.
a. 50
b. 90
c. 25
d. 75

7. The main reason of deforestation in the tropical rainforest is __.
a. hydroelectricity
b. cattle grazing
c. making farms
d. road construction

8. What percentage of the nutrients in a rainforest is obtained in the soil?
a. 10
b. 20
c. 30
d. 40

9. A few very tall trees sticking above most others in a tropical rainforest are called__.
a. canopy
b. emergents
c. epiphytes
d. understorey

10. Plants which grow on other plants are called __.
a. canopy
b. emergents
c. understorey
d. epiphytes

11. Rainforests is a major regulator of the earth's water cycle and climate because __.
a. it absorbs moisture from the soil.
b. it holds nutrients.
c. it has a large root network.
d. of transpiration

12. Trees harvested in the rainforests and sold to the 1st world countries include.
a. pine, fir and mahogany
b. pine, ebony and mahogany
c. ebony, fir and mahogany
d. mahogany, sandalwood and ebony

13. A kind of farming which when done on a small scale is ecological sound, it returns nutrients to the soil.
a. pasture lands
b. co-operative farms
c. slash and burn
d. ranching

14. How much of the world's species is estimated to live in the tropical rainforest?
a. 10 %
b. 25 %
c. 50 %
d. 75 %

15. Which of the subsequent is not a concern of hydorelectric and mineral development?
a. flooding
b. chemical pollution
c. temperature extremes
d. erosion

16. This statistic for the yearly loss of rain forests was provided by National Geographic 1991.
a. 1 million hectares
b. 2 million hectares
c. 7 million hectares
d. 14 million hectares

17. Normal rain water is slightly acidic with a pH of about __.
a. 2.4
b. 3.7
c. 5.6
d. 6.4




18. The chemicals most commonly obtained in acid precipitation are __.
a. sulphuric acid and acetic acid
b. nitric acid and acetic acid
c. acetic acid and carbon dioxide
d. sulphuric acid and nitric acid

19. The major source of __ is from coal and oil burning electrical generating plants.
a. acetic acid (CH3COOH)
b. Nitrogen monoxide (NOx)
c. Carbon dioxide (CO2)
d. Sulphur dioxide (SO2)

20. _______occurs in the spring runoff after high levels of acid accumulate in the snow over the winter.
a. acid mobilization
b. acid precipitation
c. acid shock
d. floods

Earning:   Approval pending.