The process of "pitting" refers to scratching of pulses by an emery roller during their milling. Let's break down the options to understand why this is correct:
Therefore, the correct answer is scratching of pulses by emery roller during its milling. This step is crucial in the preparation of pulses for consumption, ensuring that they are properly dehusked and ready for cooking.
The equation \[ y'' + p(x)y' + q(x)y = r(x) \] is a _________ ordinary differential equation.