Which one of the following is the organic impurities present in sewage?a)plasticsb)vegetables wastesc)metalsd)both (a) and (c)Correct answer is option 'B'. Can you explain this answer?

Question

Answer

Understanding Organic Impurities in Sewage
Sewage is a complex mixture of various substances, and it can contain both organic and inorganic impurities. Among the options provided, organic impurities primarily refer to substances that are derived from living organisms.
What are Organic Impurities?
- Organic impurities are compounds that contain carbon and are often biodegradable.
- They typically originate from plant and animal sources.
Examples of Organic Impurities in Sewage
- Vegetable Wastes:
- These include food scraps, peels, and other plant materials that are commonly found in household waste.
- Being derived from living organisms, they are organic in nature and contribute to the organic load in sewage.
- Plastics and Metals:
- Plastics (option a) and metals (option c) do not fall under the category of organic impurities.
- Plastics are synthetic compounds, while metals are inorganic substances.
Why Is It Important?
- Understanding the composition of sewage is crucial for effective waste management and treatment.
- Organic impurities, like vegetable wastes, can be broken down by microorganisms, making them essential for the biodegradation process in sewage treatment plants.
Conclusion
In conclusion, the correct answer to the question regarding the organic impurities present in sewage is option 'B' - vegetable wastes. They are organic materials that contribute significantly to the overall composition of sewage, while plastics and metals do not qualify as organic impurities.

Answer

Organic Impurities in Sewage:

In sewage, organic impurities refer to the substances derived from living organisms that are present in the wastewater. These impurities can include:

1. Vegetable Wastes:

Vegetable wastes are a common organic impurity found in sewage. These include discarded food scraps, peels, and other plant-based materials.

2. Plastics:

Plastics, although not biodegradable, can also be present in sewage as an organic impurity. This includes items like plastic bags, bottles, and other plastic waste that may have been discarded in toilets or drains.

3. Other Organic Materials:

Aside from vegetable wastes and plastics, sewage may also contain other organic materials such as paper, cloth fibers, and other biodegradable substances.

4. Metals:

Metals, on the other hand, are not considered organic impurities. They are inorganic substances and are usually not present in significant amounts in sewage.

Conclusion:

Based on the given options, the correct answer is B: Vegetable wastes. Plastics and metals are not considered organic impurities in sewage.

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