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
Which of the following wave properties is not taken advantage of in controlling noise ?
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
The most important global sink process for aerosols is
Identify the correct sequence with reference to environmental clearance process for new projects :
Answer: Screening → Scoping → Public Consultation → Appraisal
Which of the following elements has the longest oceanic residence time ?
The purpose of offshore islands is focussed for site or landscape restoration to
Answer: foster populations of endangered species without native or introduced predators
A graphical representation where frequencies are plotted against class intervals is called
Which one of the following is a density – independent factor that limits the size of the natural population ?
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
The median value of the following data : 1, 2, 3, 5, 8 and 100 ; is
Exchangeable sodium percentage (ESP) > 40, and pH > 9.8 are characteristic of
Answer: Strongly saline soil
The climate meet COP-22 was held in which country ?
In an aquatic system, the presence of noxious gases such as H2S and CH4 is associated with
Severe drought is declared if
Answer: Deficit of rainfall is more than 50 percent of the normal