Self Evaluation Quiz - Waste Management

The statement is true because the composition of waste can provide insights into its pollution potential. Certain materials or substances in waste can be more harmful to the environment or human health than others. For example, waste containing toxic chemicals or heavy metals may have a higher pollution potential compared to waste consisting of organic materials. By analyzing the composition of waste, it is possible to determine the level of pollution it may cause and take appropriate measures for its disposal or treatment.

Waste with high moisture content is not suitable for incineration because the high moisture content makes it difficult for the waste to burn effectively. Incineration relies on the combustion of waste materials, and moisture acts as a barrier to this process. The high moisture content can also lead to the production of more pollutants and emissions during incineration. Therefore, waste with high moisture content is not a suitable option for incineration.

The composition of waste that ends up at a disposal site can be affected by changes in the standard of living and economic status of the waste producers. As people's standard of living improves and their economic status increases, they tend to consume more and generate more waste. This can lead to changes in the types of waste being produced, such as an increase in packaging waste or electronic waste. Therefore, the statement that the composition of waste cannot be affected by changes in standard of living and economic status is false.

The moisture content of the waste can be calculated by finding the difference between the weight before and after drying, and then dividing that difference by the weight before drying. In this case, the weight before drying is 3.2kg and the weight after drying is 2.5kg. The difference is 3.2kg - 2.5kg = 0.7kg. Dividing this difference by the weight before drying gives us (0.7kg / 3.2kg) * 100% = 21.875%. Rounding to the nearest whole number, the moisture content is approximately 22%.

Animal and vegetable waste resulting from the preparation of food is commonly known as garbage. This waste includes leftover food, peels, scraps, and other organic materials that are discarded after cooking or eating. Garbage is typically collected and disposed of in waste management systems. Refuse, litter, and rubbish may also refer to waste materials, but they do not specifically pertain to food preparation waste.

The correct answer is "the proportions of different items that make up the waste." This statement best describes the composition of waste because it refers to the different items that are present in the waste and their respective proportions. It does not focus on the sources of waste or the amount of organic material or recoverable materials present.

The correct answer is "One person in Mampong produces 0.7kg of waste in a day". This is because the average waste generation rate is given as 0.7kg/cap/day, which means that each person in Mampong produces 0.7kg of waste in a day. This answer accurately reflects the information provided in the question.

The statement is false because a measure of household waste generation rates does not always provide an accurate estimate of the amount of waste that reaches the final disposal site. There are various factors that can affect the amount of waste that reaches the final disposal site, such as recycling efforts, waste management practices, and illegal dumping. Therefore, relying solely on household waste generation rates may not give an accurate estimate of the total waste that reaches the final disposal site.

The annual waste generation rate of the community can be calculated by multiplying the average solid waste generation rate per capita per day (0.35kg/cap/day) by the estimated population (2,000) and the number of days in a year (365). This gives us 0.35kg/cap/day * 2,000 * 365 = 256,000kg per annum. To convert this to tons, we divide by 1,000, resulting in 256 tons per annum.

As the level of development of a country increases, it is expected that the proportion of paper and organic waste in the municipal solid waste stream would decrease. This is because as countries develop, they tend to adopt more advanced waste management practices, such as recycling and composting, which reduce the amount of paper and organic waste that ends up in landfills. Additionally, developed countries often have stricter regulations and initiatives in place to promote waste reduction and encourage sustainable practices. Therefore, the proportion of paper and organic waste in the municipal solid waste stream is expected to decrease as a country develops.