ICSE Class 10 Chemistry 2017 Solved Paper

Identify the salt ${\P}$ and ${\Q}$ from the observations given below :

Question : 48 of 86

Marks: +1, -0

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.

Solution:

\; {\Q}=\;\text " Zinc carbonate "\; [ {\ZnCO}_3]

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