Environmental Studies Questions and Answers for Competitive Exams | Environmental Studies Quiz Set 24
Questions
1
Which of the following statements is true in relation to solar flat plate collectors ? Glazing (glass or plastic) above the absorber plate ?
Answer: Reduces convection losses
2
Which of the following wave properties is not taken advantage of in controlling noise ?
Answer: Diffraction
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3
The reaction O2 → 2O, which occurs in the stratosphere, does not occur in the troposphere to produce ozone due to
Answer: absence of λ < 242 nm radiation
4
The most important global sink process for aerosols is
Answer: Wet deposition
5
Identify the correct sequence with reference to environmental clearance process for new projects :
Answer: Screening → Scoping → Public Consultation → Appraisal
6
Which of the following elements has the longest oceanic residence time ?
Answer: Sodium
7
The purpose of offshore islands is focussed for site or landscape restoration to
Answer: foster populations of endangered species without native or introduced predators
8
A graphical representation where frequencies are plotted against class intervals is called
Answer: Histogram
9
Which one of the following is a density – independent factor that limits the size of the natural population ?
Answer: Severe drought
10
In a multiple regression analysis, if the variance of the observed variable Y is 1.57 and variance of the residue is 0.52, then R-square value is
Answer: 0.67
11
The median value of the following data : 1, 2, 3, 5, 8 and 100 ; is
Answer: 4
12
Exchangeable sodium percentage (ESP) > 40, and pH > 9.8 are characteristic of
Answer: Strongly saline soil
14
In an aquatic system, the presence of noxious gases such as H2S and CH4 is associated with
Answer: oxygen depletion
15
Severe drought is declared if
Answer: Deficit of rainfall is more than 50 percent of the normal
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