Which of the following base is used for cleaning and commonly known as lye?

C a (O H)_{2}

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N a O H

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K O H

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All of the above

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Solution

The correct option is B $N a O H$
A common base used for cleaning is sodium hydroxide, known commonly as lye or caustic soda. It is not to be taken internally, because it is highly damaging to humans tissue particularly the eyes. Lye appears in drain cleaners, such as Drano, and oven cleaners, such as Easy-Off, which make use of its ability to convert fats to water-soluble soap.

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