Q. In a lime kiln, to get higher yield of $CO_2$, the measure that can be taken is

Solution:

The reaction taking place in a lime kiln is
$\ce{CaCO_3 (s) <=> CaO(s) + CO_2(g)}$
Removing one of the product will shift the equilibrium in the forward direction. As such removing $CO_2$ as and when it forms, will shift the equilibrium in the forward direction. This will increase the yield of $CO_2$

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