EDUCATION UGC NET
ENVIRONMENTAL STUDIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cells
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Protozoa
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Chromozomes
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Coliform bacteria
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Detailed explanation-1: -The number of coliforms present is established by counting the number of colonies and expressing this value in terms of number per 100 ml of water.
Detailed explanation-2: -Water quality is measured by several factors, such as the concentration of dissolved oxygen, bacteria levels, the amount of salt (or salinity), or the amount of material suspended in the water (turbidity).
Detailed explanation-3: -There are 4 components of water chemistry that affect your water quality: sanitizer, total alkalinity, pH balance and calcium hardness.
Detailed explanation-4: -These include colour, turbidity, pH, and the organoleptic (aesthetic) parameters (taste and odour). It is possible and technically acceptable to refer to the same parameter in different ways that may appear to suggest a variation in the standard required.