Question

Burning of waste substances usually at a high temperature of over 1000° C to convert them into ashes is called:

• A. Eutrophication
• B. Incineration
• C. Desertification
• D. Saponification

Answer 1

The correct option is B

Incineration

ANSWER: The correct option is (B) :

Explanation of the correct option :

1. Incineration is a waste treatment method in which the waste is combusted at a high temperature.
2. This method is also termed “Thermal Treatment”.
3. Incineration turns the waste into ashes, flue gas, and heat.
4. When heat is generated toxic gases like ${\mathrm{CO}}_{\mathrm{x}}$, ${\mathrm{NO}}_{\mathrm{x}}$, ${\mathrm{SO}}_{\mathrm{x}}$, etc., are liberated from the plastic waste.
5. Incineration is considered to be harmful to the environment as it causes a lot of pollution.

Explanation of the incorrect option:

OPTION A

1. Eutrophication is the over-enrichment of minerals and nutrients like nitrogen and phosphorous into the water body. It leads to the growth of algae and plankton and the depletion of dissolved oxygen in the water bodies.

OPTION C

1. Desertification is the land degradation in arid and semi-arid areas due to human activities and climatic factors.

OPTION D

1. Saponification is the process of making soaps.

FINAL ANSWER: Burning of waste substances usually at a high temperature of over 1000° C to convert them into ashes is called: Incineration.