Question

which type of waste can contain hazardous materials and valuable components?
a. organic waste
b. electronic waste (e - waste)
c. paper waste
d. food waste
which waste management practice aims to eliminate waste sent to landfills?
a. waste accumulation
b. incineration
c. zero waste
d. landfilling

Explanation:

First Question (Which type of waste can contain hazardous materials and valuable components?)

• Option a: Organic waste (like food, plant matter) is biodegradable, has no hazardous materials or valuable components in the context of this question.
• Option b: Electronic waste (E - waste) contains hazardous materials (e.g., lead, mercury from electronics) and valuable components (e.g., precious metals like gold, silver in circuit boards).
• Option c: Paper waste is mainly cellulose, no hazardous materials and limited valuable components.
• Option d: Food waste is organic, biodegradable, no hazardous or valuable components as per the question's context.

• Option a: Waste accumulation is about collecting waste, not eliminating landfill waste.
• Option b: Incineration burns waste, but it doesn't aim to eliminate landfill waste (it just changes waste form, and some ash may go to landfills).
• Option c: Zero waste is a practice that aims to recycle, reuse, and reduce waste so that very little or no waste is sent to landfills.
• Option d: Landfilling is sending waste to landfills, so it's the opposite.

Answer:

b. Electronic waste (E - waste)

Second Question (Which waste management practice aims to eliminate waste sent to landfills?)