NTA-NET (UGC-NET) Environmental Science (89): Questions 272 - 274 of 1711
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Question 272
Appeared in Year: 2019
Question MCQ▾
Which of the following is characteristics of direct band gap semi-conductor Ga-As? (December)
(i) Less sharp absorption band
(ii) Large values of extinction coefficient
Choose the correct answer from options given below:
Choices
Choice (4) | Response | |
---|---|---|
a. | (i) and (ii) | |
b. | (i) only | |
c. | (ii) only | |
d. | Neither (i) nor (ii) |
Question 273
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 274
Appeared in Year: 2019
Question Assertion-Reason▾
Assertion(Ꭺ)
Strategic Environmental Assessment (SEA) is a more advanced tool in environmental management (July)
Reason(Ꭱ)
SEA is applicable at the level of policy, planning and programmes.
Choices
Choice (4) | Response | |
---|---|---|
a. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ | |
b. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |
c. | Both Ꭺ and Ꭱ are false | |
d. | Ꭺ is true but Ꭱ is false |