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प्रश्न
Observe the following figure and answer the questions :
- Identify the process shown in the figure.
- Explain the process in short.
उत्तर
- Modern land filling site
- Process:
- Degradable waste being accumulated in urban areas is used for this purpose.
- Large pits are dug in open spaces far away from the residential area and those pits are lined with plastic sheets as a precaution against the pollution of soil due to leaching of toxic and harmful materials.
- Compressed waste is dumped in the pit. It is covered with layers of soil, saw dust, leafy waste and specific biochemicals. Bioreactors are mixed in some places.
- Microbes present in soil and other top layers decompose the waste. Completely filled pit is sealed with soil slurry.
- Best quality compost is formed after few days. Such land filling sites can be reused after removal of compost.
APPEARS IN
संबंधित प्रश्न
Microorganisms can be seen with the help of a _________.
Alcohol is produced with the help of _________.
Match the organisms in Column A with their action in Column B.
| A | B | ||
| (i) | Bacteria | (a) | Fixing Nitrogen |
| (ii) | Rhizobium | (b) | Setting of curd |
| (iii) | Lactobacillus | (c) | Baking of bread |
| (iv) | Yeast | (d) | Causing Malaria |
| (v) | A protozoan | (e) | Causing Cholera |
| (vi) | A Virus | (f) | Causing AIDS |
| (g) | Producing antibodies |
Can microorganisms be seen with the naked eye? If not, how can they be seen?
What are the major groups of microorganisms?
Rewrite the following statement using correct of the option and explain the completed statement.
Process of -- -- -- -- of milk proteins occurs due to lactic acid.
Which precautions are necessary for proper decomposition of domestic waste?
Use the Whittaker method to classify bacteria, protozoa, fungi, algae, prokaryotic and eukaryotic microbes.
Write the characteristics of viruses.
Draw a neat and labelled diagram.
Different types of bacteria.
Arrange the following in ascending order of size Bacteria, Fungi, Viruses, Algae.
Which are the different types of micro-organisms?
Give reasons.
A refrigerator is used in almost every home.
Microorganisms are measured in _______.
How disease causing microorganisms enter into human beings?
Name the four major groups of Microbes.
Match the names of scientists given in Column A with the discovery made by them given in Column B.
| Column A | Column B |
| (a) Louis Pasteur | (i) Penicillin |
| (b) Robert Koch | (ii) anthrax bacterium |
| (c) Edward Jenner | (iii) Fermentation |
| (d) Alexander Fleming | (iv) small pox vaccine |
| (v) Typhoid |
Paheli watched grandmother making mango pickle. After she bottled the pickle, her grandmother poured oil on top of the pickle before closing the lid. Paheli wanted to know why oil was poured? Can you help her understand why?
The major constituent of vinegar is ______.
