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Recycling of Waste Materials Definition Quiz

16 Questions

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Recycling of Waste Materials Definition Quiz

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Questions and Answers

What is the primary role of recycling in waste management?

To convert waste materials into new materials and objects (correct)

To lower greenhouse gas emissions

To reduce energy usage and air pollution

To prevent the waste of potentially useful materials

What is the key role of bacteria and other microbes in waste recycling?

Conversion of waste materials into new materials and objects

Biodegradation of organic materials and nutrient recycling (correct)

Lowering greenhouse gas emissions

Preventing the waste of potentially useful materials

How does recycling contribute to environmental sustainability?

By reducing energy usage and air pollution

By preventing the waste of potentially useful materials (correct)

By lowering greenhouse gas emissions

By converting waste materials into new materials and objects

In what way are microbes essential to waste recycling?

Fermentation stages of waste recycling Signup and view all the answers

What do bacteria and other microbes do in marine ecosystems?

Biodegradation of oil Signup and view all the answers

Under what conditions is ammonia further oxidized to nitrate?

Aerobic conditions Signup and view all the answers

What are phosphate and sulphate oxidized to in organic substances?

Phosphate and sulphate Signup and view all the answers

What is the main gaseous by-product of anaerobic conversion?

Methane Signup and view all the answers

What is the product mainly produced from the conversion reactions of organic wastes for food by microorganisms?

Cellular material of micro-organisms Signup and view all the answers

What does the growth yield depend on?

The type of substrate and environmental conditions Signup and view all the answers

What is the main role of microbes in biodegradation?

Recycle nutrients by decomposing organic materials Signup and view all the answers

What is the major component of natural gas produced by microbes during degradation of organic materials?

Methane gas Signup and view all the answers

Which process results in the liberation of carbon dioxide in dough making bread rise?

Fermentation Signup and view all the answers

What is the microorganism Aspergillus carbonarius used for in waste recycling?

Biodegradation of chromium shavings Signup and view all the answers

What do natural biodegradation and fermentation have in common?

Both involve the use of microbes to decompose organic materials Signup and view all the answers

What does microbial fermentation result in when degrading brewery waste and organic materials?

Production of methane gas Signup and view all the answers