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Question
Mild non-corrosive basic salt is ______.
Options
Ca(OH)2
NaCl
NaOH
NaHCO3
Solution
The mild non-corrosive basic salt is NaHCO3.
Explanation:
Baking soda, or sodium hydrogen carbonate, is a mild, non-corrosive basic salt. It can be used to neutralise an acid because of its pH of 8.3.
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Salt 'P', commonly used in bakery products, on heating gets converted into another salt 'Q' which itself is used for the removal of hardness of water and a gas 'R' is evolved. The gas 'R', when passed through freshly prepared lime water, turns milky. Identify 'P', 'Q' and 'R', giving a chemical equation for the justification of your answer.
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