Choose
Correct Answer
Q.1 Biogas
predominatly contains:
(a)
CH4 (b) NH3 (c) SO2 (d) Ethane
Q.2. Which of the follwoing is a non-renewable source of energy.
(a) Coal (b) Forest (c)
Water (d) Wind
Q.3. Extraction of minerals causes
(a) Air pollution (b) Streams (c)
Sea (d) Lakes
Q.4. Which of the following is an example of nonmetal?
(a) Aluminum (b) Gold (c)
Silver (d) Graphite
Q.5 The
rate of growth of a natural population.
(a)
Always reaches the carrying capacity
of the ecosystem.
(b) Is limited by the carrying capacity of the ecosystem.
(c) When graphed, always has a positive slope.
(d) Is calculated by subtracting death rate from birth
rate.
(e) Exceeds the death rate and rate of emigration. (AKTU. - 2010-11)
Q.6 What is meant by the acronym EIA?
(a) Environmental Impact Assessment
(b) Environmental
Intrusion Assessment
(c) Economic Impact Audit
(d) Environmental
Impact Audit. (AKTU. - 2010-11)
Fill in
the following blanks with suitable words.
Q.7. Dental fluorosis is caused by excessive concentration of
__________ in drinking water. (AKTU. - 2008-09)
Q.8. Overgrazing
results in ___________. (AKTU. - 2008-09)
Q.9. Major
purpose of most of the dams around the world is ___________. (AKTU. - 2008-09)
Q.10. A
fuel cell, in order to , produce electricity burns ______. (AKTU. - 2008-09)
Q.11. __________are also called in exhaustible resources.
Q.12. Non-renewable resources are also called __________
Q.13. __________ arise from the contamination of water by human or
animal faces or urine infected by pathogenic bacteria or viruses.
Q.14. During
__________ plants and animals release carbon back to the surrounding medium as
carbon-dioxide.
Q.15. __________ is organic matter derived from plants, algae, animal
etc.
Q.16. The biogas obtained from cattle dung contains methane about
__________ and carbon dioxide about __________ and negligible amount of H2S and hydrogen etc.
Q.17. Excess intake of fluoride leads to__________
Q.18. __________results from the ruthless exploitation of natural
resources without consideration for the future.
Q.19. Hydro power is a most conventional __________ energy source.
Q.20. __________ are devices which directly convert incident solar
radiation to electrical current.
Q.21. Solar cells or photovoltaic works on the principle of __________
Q.22. __________ is an alternative future source of energy.
Q.23. The disease caused by excess of fluoride in water is known
as______________
Q.24. Herbivores are__________consumers.
Q.25. Chipko movement was started to conserve _________.
Indicate
True or False for the following statements: -
Q.26. Hydrogen is an alternative future source of energy. (2008-09)
Q.27. Hydro-power
energy and biomass energy are renewable energy sources. (2008-09)
Q.28. Exhaustible resources have the inherent ability to reappear or
replenish themselves by recycling, reproduction or replacement.
Q.29. Most of the carbon dioxide enters the living world through
photosynthesis.
Q.30. Carbon is also recycled during burning of fossil fules.
Q.31. Hydro power is a non polluting source of energy.
Choose the correct answer
1. (a) 2.
(a) 3. (d) 4. (d)
5. (d) 6. (a)
Fill in the blanks
7. Fluoride
8. Exceeded carrying capacity of land which
depends on the fertility of soil and the rainfall.
9. Hydroelectricity and irrigation 10.
Hydrogen.
11. Renewable resources 12.
Exhaustible resources
13. Waterborn diseases 14.
Respiration
15. Biomass 16. 55% to 60%, 40% to 45% 17. Fluorosis
18. Dereliction 19. Renewable 20. Solar
cells
21. Photoelectric effect 22. Hydrogen 23. Dental
fluorosis 24. Primary
25. trees
True Or
False
26. True 27.
True 28. False 29. True
30. True 31.
True
