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Answers
Answer:
a)Magnesium burns very easily in air to form magnesium oxide and this reaction needs an external source of energy.Magnesium metal is being oxidized to its metal oxide state so it undergoes oxidation.
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b)Corrosion is the natural process which degrades or corrodes the metal by chemical reaction in its environment.In this chemical reaction the metal is changed to its more stabler form of metal oxide by reacting with air and moisture in its environment
Answer:
1. Magnesium oxide is formed by reaction with oxygen.
2. As natural fibres take more time to dry and synthetic fibres. So, I will take a Nylon with it to check whether it takes less time or more.
3.
- High noise exposure - can lead to hearing impairment, hypertension, disturbance in sleep.
- Breathing problems- inhalation of cotton and other fabric dust leads to lung diseases and other respiratory diseases.
- Chemical exposure- to harmful pesticides and chemicals from the processing and dyeing of materials.
- Within factories, there is dangerous inhalation of chemical fumes from the machines and some tooling machines can prove to be hazardous. .
- Workers in the industry get infected by a bacterium, anthrax, which causes a fatal blood disease called 'sorters disease'.
4.
- Anti-acid medications( e.g aluminium hydroxide) are used to neutralize excessive stomach/digestive (hydrochloric) acid.
- Basic fertilizers are used to neutralize acid soils and acidic fertilizers are used to neutralize basic soils in agriculture.
- Wasp sting is basic and is usually neutralized with vinegar.
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