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Environmental Issues

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Advanced Botany

Plant Growth and Development
Organisms and Populations
Ecosystem
Biodiversity and Conservation
Environmental Issues
Microbes in Human Welfare
Strategies for Enhancement in Food Production
Molecular Basis of Inheritance
Principles of Inheritance and Variation
Sexual Reproduction in Flowering Plants
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Respiration in Plants
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Mineral Nutrition
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Cell-The Unit of Life
Anatomy of Flowering Plants
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Plant Kingdom
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  1. Measuring Biochemical Oxygen Demand (BOD) is a method used for:
    1. estimating the amount of organic matter in sewage water.
    2. working out the efficiency of oil driven automobile engines.
    3. measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale.
    4. working out the efficiency of RBCs about their capacity to carry oxygen.
Correct Option: A

BOD is a measure of organic matter present in water. It refers to amount of O2 consumed by microbes to decompose all the organic matter in 1 L of water at 20°C for 5 days. The greater the BOD of waste water, more is its polluting potential.


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