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प्रश्न
Write a short note.
Land filling sites
उत्तर
- Landfill sites are located away from the residential area.
- In this method of waste disposal, large pits are dug in an open area.
- These pits are lined with plastic sheets to prevent soil pollution caused by the leaching of toxic and harmful substances into the soil.
- The compressed degradable waste is dumped into the pit and covered with layers of soil, sawdust, leafy waste, specific biochemicals and sometimes the bioreactors are mixed for better aeration. This completely filled pit is sealed with soil slurry.
- Microbes present in soil and other layers decompose the waste. As a result, best quality compost is obtained after few days which can be removed and such sites can be reused.
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संबंधित प्रश्न
The bread or idli dough rises because of ______.
a) What is clean technology ?
b) Why is it essential to ban plastic bags?
Give reasons.
Soil is turned over during tilling.
_________ is used in the commercial bakery industry.
Find an odd one out.
Find an odd one out.
An enzyme obtained from fungi to produce vegetarian cheese.
Lactic acid : To impart acidity : : Beta carotene : _____________________
Microbes have the natural ability of decomposing the man-made chemicals.
Briefly explain the environmental role of microorganisms in pollution control?
What is retting?
The first antibiotic ______ was developed by ______.
Which enzyme was used earlier for cheese production?
- Which process is shown in the above given picture?
- Give two examples for liquid fuels and solids fuels obtained by this process.
______ bacteria is used for industrial production of yogurt.
The figure below shows a concept of segregation, observe the following figure and answer the questions that follow:
- What is dry and wet waste?
- Why do we need to segregate our garbage?
In the process of making bread the carbohydrates in the flour are fermented by baker's yeast and sugar is transformed into carbon dioxide and ______.
Lactobacillus brevis gives us the beverage ______.
Complete the given paragraph by filling the blank spaces from the options given in the bracket:
[oxygen, pyridines, mechanical, CO2, petroleum, fatal, polyester, norcadia]
Spilling of ______ oil occurs in ocean due to various reasons. This oil may prove ______ and toxic to aquatic organisms. It is not easy to remove the oil layer from surface of water by ______ method. However, bacteria like pseudomonas spp. and Alcanovorax borkumensis have to ability to destroy the ______ and other chemicals. Hence, these bacteria are used to clear the oil spills. These are called as hydrocarbonoclastic bacteria (HCB). HCB decompose the hydrocarbons and bring about the reaction of carbon with ______. ______ and water is formed in this process.
