Question

By squizzing lemon on a piece of rock
the gas liberated turned lime water
milky, which compound is present in
the rock?​

Answer 1

Answer:

calcium

ie calcium carbonate caco3

Answer 2

$\huge\mathfrak\green{calcium carbonate}$

When lemon is squeezed onto the rock, a gas is liberated. This gas turned the lime water milky. This confirms that Carbon dioxide is present in the rock. This is because insoluble calcium carbonate is CaCO3 is formed.

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