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Identify the salts Q from the observatio...

Identify the salts Q from the observations given below:
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky. When `NH_(4)OH` solution is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess `NH_(4)OH` solution.

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Zinc carbonate
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ICSE-SAMPLE PAPER 2017-SECTION-II
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