CBSE
Multiple Choice QuestionsFactor govering the earth surface is
Topographic
Edaphic
Temperature
Biotic
Which of the following in sewage treatment remove suspended solids?
Tertiary treatment
Secondary treatment
Primary treatment
Primary treatment
IUCN stands for
Indian Union for Conservation of Nature
International Union for Conservation of Nature
Indian Union of Chemical Nomenclature
International Union for the conservation of Nutrients
Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste water into natural surface water, is:
< 3.0 ppm
< 10 ppm
< 100 ppm
< 100 ppm
Which one of the following combination is incorrect?
Rio convention → Air pollution
Kyoto protocol → Climate change
Montreal Protocol → Ozone depletion
Ramsar Convention → Wetland conservation
Biological treatment of water pollution is done with the help of
Fungi
Lichen
Phytoplanktons
None of the above
Photochemical smog pollution does not contain
ozone
nitrogen dioxide
carbon dioxide
carbon dioxide
Which one of the following statements is not valid for aerosols?
They are harmful to human health
They alter rainfall and monsoon patterns
They cause increased agricultural productivity
They cause increased agricultural productivity
Which of the following species are restricted to an area?
Sympatric species
Sibling species
Allopatric species
Endemic species
Soil salinity is measured by
Porometer
Calorimeter
Conductivity meter
Potometer
