In a lime kiln, to get higher yield of `CO_(2)` the measure that can be taken is `:`

Options

A. to maintain high temperature
B. to pump out `CO_(2)`
C. to remove CaO
D. to add more `CaCO_(3)`

Answer

B

Explanation

The reaction taking place in a lime kiln is
`CaCO_(3) overset(Delta) (hArr) 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)`.