Water [NTA-NET (UGC-NET) Environmental Science (89)]: Questions 6 - 8 of 45
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Question 6
Appeared in Year: 2016
Question MCQ▾
In India, target for generating electric power from small hydropower projects by the year 2022 is (September)
Properties | Peat | Lignite | Bituminous | Anthracite |
Heat Content (Btu/lb) | 430 | 4,000 - 8,300 | 11,000 - 15,000 | 13,000 - 15,000 |
Moisture (%) | 75 | 30 - 60 | < 15 | |
Carbon (%) | < 60 | 60 - 70 | 77 - 87 | > 87 |
Ash (%) | Up to 14 | 10 - 50 | 3 - 12 | 10 - 20 |
Sulfur (%) | 0.4 – 1.0 | 0.7 – 4.0 | 0.6 - 0.8 |
Choices
Choice (4) | Response | |
---|---|---|
a. | 5 GW | |
b. | 10 GW | |
c. | 500 GW | |
d. | 50 GW |
Question 7
Appeared in Year: 2017
Question MCQ▾
Which of the following are useful indicators of pollution potential of organic effluents? (January)
(a) Total Organic Carbon (TOC)
(b) Biological Oxygen Demand (BOD)
(c) Turbidity
(d) Conductivity
Choose the correct code:
Choices
Choice (4) | Response | |
---|---|---|
a. | (a) and (b) only | |
b. | (a) and (c) only | |
c. | (b) and (d) only | |
d. | None of the above |
Question 8
Appeared in Year: 2017
Question MCQ▾
In an aquatic system, the presence of noxious gases such as H2S and CH4 is associated with: (January)
Choices
Choice (4) | Response | |
---|---|---|
a. | Absence of macrophytic vegetation | |
b. | Excess of dissolved oxygen | |
c. | Oxygen depletion | |
d. | Abundant algal growth |