Advertisements
Advertisements
प्रश्न
Name the following method of solid waste management.
उत्तर
A) Modern landfill site.
B) The waste is used in this method is degradable waste being accumulated in urban areas
C) The useful substances can be obtained from such methods are compost and methane gas.
APPEARS IN
संबंधित प्रश्न
What are the benefits of mixing ethanol with petrol and diesel?
Answer the following.
Which fuels are obtained from biomass?
There is a oil layer on the water surface of river in your area. What will you do ?
Garbage is converted into ______ by micro-organisms.
Find an odd one out.
Saccharomyces cerevisiae : Ethanol : : Aspergillus oryzae : ________________
Gaseous fuel : Coal gas : : ___________ : Coal
Shelf life of yogurt can be increased by pasteurization.
Match the following.
Column A | Column B |
1) Aspartame | a) Anaerobic respiration |
2) Fermentation | b) Microbial restrictor |
3) Niacin | c) Vanillin |
4) Essence | d) Sweetener |
Why does the process of dirt removal occur in detergents even at low temperature?
Give scientific reason.
Probiotics have got more importance in recent times.
Give scientific reason.
Microorganisms are used to control the effects of sea oil spills.
How is soil pollution controlled by microbes?
Why should we use bioinsecticides?
Read the following paragraph and write the answers to the questions asked.
Sulphuric acid is present in the acid rain and materials coming out of mines. You know that erosion of metals present in statues, bridges and buildings occurs due to it. Sulphuric acid is a source of energy for some species of bacteria like Acidiphilium spp. and Acidithiobacillus ferrooxidans. Hence, these bacteria can control the soil pollution occurring due to acid rain. Water soluble salts of uranium are present in the wastes produced during electroplating and in effluent released in the environment from the atomic energy plant. Geobacter convert these salts of uranium into insoluble salts and thereby prevent those salts from mixing with groundwater sources.
- What causes metal erosion in statues, bridges and buildings?
- Sulphuric acid is the source of energy for which bacteria?
- What kind of pollution do these bacteria control?
- What are the water soluble salts in atomic energy plants and in the process of electroplating?
- Which bacteria prevent these salts from mixing with ground water by converting them Into insoluble salts?
Write the answers to the questions by observing the figure.
- What type of fuel production process is shown in the figure?
- Write two examples of each of the solid, liquid and gaseous fuels produced in this fuel production process?
- How do microorganisms play their role in this process?
Unscramble the jumbled word underlined in the following statement.
Curbossulite is an air-borne disease caused by a bacterium.
Find odd one out:
______ bacteria is used for industrial production of yogurt.