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In the graph below, the concentration of a particular pollutant in a lake is plotted over (alternate) days of a month in winter (average temperature 10 °C) and a month in summer (average temperature 30 °C) Consider the following statements based on the data shown above: i) Over the given months, the difference between the maximum and the minimum pollutant concentrations is the same in both winter and summer. ii) There are at least four days in the winter month such that the pollutant concentration on those days are within 1 ppm of the pollutant concentrations on the corresponding days in the winter month. Which one of the following options is correct?
A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1 m3/h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3. The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m3, the volume of the mixed flow reactor should be increased by a factor of
The circulation and movement of soluble inorganic matter (nutrients) derived from sedimentary and atmospheric phases and reservoirs through organic phase of various biotic components and finally their return to inorganic phase is collectively called:
Which of the following is an inorganic gaseous pollutant of air ?
Which of the following is an inorganic gaseous pollutant of air?
Which of the following is an autotrophic bacterium which requires only inorganic materials for growth?
According to Odum, which of the following is the common and wide-spread type in nature which begins in a predominantly inorganic environment and is characterised and dominated by autotrophic organisms?
Which of the following is a natural inorganic fertiliser?
Which of the following is an inorganic polymer?
Which of the following is correct statement/statements regarding inorganic nutrients in plants? (a) N, S and Fe are macronutrients (b) O, Ca and Mg are Micronutrients (C) Cu, Zn and Mn are essential elements (d) B, Mo and Cl are non-essential elements