For an overcast day or night, the atmosphere is
The wavelength range of UV–C radiations is
In a gas chromatography experiment, the retention factor (Rf) values for pollutant ‘A’ and pollutant ‘B’ in a
mixture of pollutants were 0.5 and 0.125, respectively. If the distance travelled by solvent front is 12 cms, the
distance (in cms) travelled by pollutant ‘A’ and pollutant ‘B’ will be
Cells grown in a medium containing phosphorous –32 will show radio labelling in
“Double digging” is a method of
Answer: Bio-intensive agriculture
The rate of replacement of species along a gradient of habitats pertains to
If individuals of a species remain alive only in captivity or other human controlled conditions, the species is said to be
Which of the following symbolises correct sequence in hydrosere ?
Answer: Diatoms → Hydrilla → Wolffia → Cyperus → Populus
Which of the following is not a class of aquatic ecosystems based on salinity levels ?
Answer: Stagnant water ecosystem
Limnetic zone in freshwater ecosystem is characterised by
Answer: Absence of rooted vegetation
Vegetation cover shows maximum reflectance in which of the following regions of the electromagnetic radiation spectrum ?
During remote sensing of the vegetation cover, the spectral reflection of vegetation over electromagnetic radiation spectrum depends upon
Answer: All the above characters
The volume of ejecta and the column height for a volcano are 108.5 m3 and 24 km, respectively. What is its volcanic explosivity index value ?
In the context of material balance in hydrological cycle, which of the following equations is correct for
Answer: Precipitation + inflow = evaporation
In disaster management which steps are followed in post-disaster recovery phase ?
Answer: Relief, rehabilitation, reconstruction, learning – review