Quiz on Management of Hazardous Waste

What percentage of hazardous waste generation in India comes from Andhra Pradesh, Gujarat, Maharashtra, and Tamil Nadu?

• 50%

• 30%

• 90%

• 75%

According to the working definition given by WHO, UNEP, and World Bank in 1987, how is 'Hazardous Waste' defined?

• Any waste that is toxic in nature

• Any waste that can cause significant hazard to human health or the environment

• Any waste excluding radioactive waste

• Any waste excluding domestic waste

Which classification of hazardous waste includes solids, liquids, gases, and sludges?

• Solid wastes

• Liquid wastes

• Sludge wastes

• Gaseous wastes

What is the primary advantage of chemical methods for treating hazardous waste?

• Recovering useful by-products and converting waste into less hazardous substances

• Increasing the volume of waste

• Releasing toxic gases into the environment

• Converting waste into more hazardous substances

Which treatment technology is commonly used for treating many types of hazardous organic wastes present in soils and other substances?

• Thermal methods

• Incineration

• Land disposal

• Biological methods

What is the purpose of 'In Situ' Biodegradation in hazardous waste treatment?

• To export hazardous waste to other countries

• To move the treatment system to the site of contaminated soil and water

• To increase the concentration of hazardous waste

• To treat contaminated soils above the aquifer

What is the primary function of Sedimentation in physical treatment processes of hazardous waste?

• To remove dissolved organic hazardous wastes

• To drive volatile contaminants out of waste solution

• To achieve solid-liquid separation

• To remove toxic metal ions from solution

Which technique uses pressure to force contaminated water through a semi-permeable membrane while restricting the passage of larger contaminant molecules?

• Reverse osmosis

• Aeration

• Adsorption

• Ion-exchange

What is the primary advantage of biological treatment systems in hazardous waste treatment?

• They are not affected by toxic substances

• They convert organic matter into water and new bacterial cells

• They require high temperatures for operation

• They are not sensitive to pH levels

Which land disposal technique involves storing liquid hazardous wastes in excavated or diked areas?

• Waste piles

• Injection wells

• Surface impoundments

• Landfills