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Which of the following undesirable and waste material is neither gas nor liquid?

(a) Water waste

(b) Oxygen

(c) Liquid waste

(d) Solid waste

The question was asked in a national level competition.

This intriguing question originated from Basic Aspects of Solid Waste Management in section Biotechnology for Solid Waste Management of Environmental Biotechnology

1 Answer

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Correct option is (d) Solid waste

For explanation: Solid waste like meal scraps, waste food, racked leaves, sewage, animal manure etc. are referred as unwanted waste material that is not in gas or liquid state. Molecular oxygen, liquid waste and water waste are not found in solid state.

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