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Question
Which of the following is a measurement of water polluiton?
Which of the following is a measurement of water polluiton?
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Solution
The correct option is C BOD
Polar stratospheric clouds (PSCs) are the medium on which reservoir chlorine compounds are converted into ozone-destroying chlorine radicals, they are essentially two types of PSC known as type 1 and type 2.
Polychlorinated biphenyl (PCBs) is a group of organic compounds used in the manufacture of plastics, as lubricants, in transformers, adhesives and so forth. They are highly toxic to aquatic life and persist in the environment for long periods of time. They can accumulate in food chains and may produce harmful side-effects at high concentrations.
Biochemical oxygen demand (BOD) is the amount of dissolved oxygen needed (i.e demanded) by aerobic biological organisms to break down organic material present in a given water sample at a certain temperature over a specific time period.
Chemical oxygen demand (COD) is defined as a measure of the oxygen equivalent of the organic matter content of a sampe that is susceptible to oxidation by a strong chemical oxidant. Therefore, BOD is a measurement of water pollution.
Option (c) is correct.
Polar stratospheric clouds (PSCs) are the medium on which reservoir chlorine compounds are converted into ozone-destroying chlorine radicals, they are essentially two types of PSC known as type 1 and type 2.
Polychlorinated biphenyl (PCBs) is a group of organic compounds used in the manufacture of plastics, as lubricants, in transformers, adhesives and so forth. They are highly toxic to aquatic life and persist in the environment for long periods of time. They can accumulate in food chains and may produce harmful side-effects at high concentrations.
Biochemical oxygen demand (BOD) is the amount of dissolved oxygen needed (i.e demanded) by aerobic biological organisms to break down organic material present in a given water sample at a certain temperature over a specific time period.
Chemical oxygen demand (COD) is defined as a measure of the oxygen equivalent of the organic matter content of a sampe that is susceptible to oxidation by a strong chemical oxidant. Therefore, BOD is a measurement of water pollution.
Option (c) is correct.
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