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(a) 6.5 -7.5
(b) Lead battery manufacturing factory
(a) disposal of human excreta directly.
(b) a gift of nature which is very useful to mankind
(b) forests
The pH range most conducive for life of fresh water plants and animals is
(a) 6.5 -7.5
(a) 6.5 -7.5
See lessThe pH of water sample collected from a river was found to be acidic in the range of 3.5 – 4.5, on the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the pH of river water?
(b) Lead battery manufacturing factory
(b) Lead battery manufacturing factory
See lessThe main cause for abundant coliform bacteria in the river Ganga is
(a) disposal of human excreta directly.
(a) disposal of human excreta directly.
See lessThe most appropriate definition of a natural resource is that it is a substance commodity that is
(b) a gift of nature which is very useful to mankind
(b) a gift of nature which is very useful to mankind
See lessThe most rapidly dwindling natural resource in the world is
(b) forests
(b) forests
See less