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Consider the following statements : The purpose of adding sodium sulphate and sodium silicate to the detergent in a washing powder is1. to keep the washing powder dry.2. to maintain the alkalinity of the powder. Which of these statements is/are correct?

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Most metals do not occur in their natural state. They are often found as compounds such as metal oxides, sulfides and halides.

Aluminium oxide is the main metal compound present in the ore known as bauxite. Iron pyrites or 'fool's gold' is mainly iron sulfide.


Consider the following statements : The purpose of adding sodium sulphate and sodium silicate to the detergent in a washing powder is<br />1. to keep the washing powder dry.<br />2. to maintain the alkalinity of the powder. Which of these statements is/are correct?






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