(i) Describe how insoluble solids are removed from river water.filtration(1)...[1](ii) Name the substance used to remove bad tastes and odours from river water.carbon /charcoal (1)[1](iii) Name the substance used to disinfect river water so it is safe to drink.chlorine (1)[1 相关...
According to Time, if tap water is drunk within six months, the chlorine (氯气) in the water will be enough to kill any bacteria and keep it safe to drink. However, there are also some exceptions. If you accidentally put your fingers into water or store water in unclean containers day ...
32 Sea water is not safe to drink. It can be converted into drinkable water by desalination.What does desalination involve?D A adding chlorine to kill bacteria B boiling the water to sterilise it C removing the salt by filtration D separating the water by distillation 相关知识点: 试题来...
When Is Water Safe to Drink? Mia Nacamulli Take a look at the water in this glass. Refreshing, hydrating, and invaluable to your survival. Before you take a sip, though, how do you know that the water inside is free from disease-causing organisms and pollutants? One out of ten people ...
When Is Water Safe to Drink? Mia Nacamulli Take a look at the water in this glass. Refreshing, hydrating, and invaluable to your survival. Before you take a sip, though, how do you know that the water inside is free from disease-causing...
Experts weigh in on the chemicals that can be found in drinking water, how it’s regulated, and what you can do if you’re worried about your water.
Does underground water move like a river or is it more quiet like a lake? Is a drink from a well always cold? Is groundwater more pure than river... M Price - Allen & Unwin 被引量: 151发表: 1996年 The Dutch secret: how to provide safe drinking water without chlorine in the Nether...
aSome water sources have become so badly explored that the water is not safe to drink. 一些水源变得那么非常探索水不是安全喝。[translate] a发展可再生能源与清洁能源是国家经济和社会发展的重大战略任务。 Develops the renewable energy and the clean energy is the state economy and the social developme...
Aqua Pennsylvania insists the water is safe to drink in Abington despite reports of a strange taste and smell. People said they noticed a stronger chlorine smell over the last few days. CBS News Philadelphia checked with Aqua Pennsylvania and the water company traced ...
Discusses the safety and quality of drinking water. Laws and regulations; Factors affecting the quality of water such as contaminated source and treatment facilities; Guidelines on how to maintain and improve water quality; Sources for more information. INSETS: Fluoride and chlorine--Healthy additions...