Which of the following are not paired correctly?

Washing soda - sodium carbonate

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Baking soda - sodium hydrogen carbonate

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Slaked lime - calcium oxide

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Common salt - sodium chloride

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Solution

The correct option is D Slaked lime - calcium oxide
Calcium hydroxide, traditionally called slaked lime, is an inorganic compound with the chemical formula $C a (O H)_{2}$ . It is a colourless crystal or white powder and is obtained when calcium oxide (called lime or quicklime) is mixed, or 'slaked' with water.

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