Mrc Unit 2 Chemistry Water Stage 2
5 Questions
| Attempts: 53
.
Questions and Answers
- 1.What are chemical contaminants?
- A.
Elements of compounds that are found in drinking water
- B.
Fertiliser pollutants that are found in ground water
- C.
Elements or compounds that may be harmful if consumed in drinking water
- 2.Why are Heavy metals dangerous in drinking water?
- A.
They are toxins that can affect the nerves that control breathing
- B.
They are toxins that affect the ability to digest specific amino acids in foods
- C.
They are toxins cause changes in the Brain that are irreversible
- 3.What is salinity?
- A.
The amount of Magnesium and Sodium ions found in water
- B.
The amount of Sodium Chloride found in water
- C.
The amount of ionic compounds found in water
- 4.Where do salts found in the water system originate from?
- A.
Dissolving mineral deposits
- B.
From oceans evaporating and transport of ionic salts in atmospheric water vapour
- C.
From the decomposition of organic matter such as animals and plant life
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