Hi

Yes 10 % reservation quota for Economically Weeker Section is applicable only for students from general category. 

The eligibility to avil this benefit is 

1. Needs to from general category

2. Family income should be less than 8 lacks

3. Should posses less than 5 acres of agricultural land. 

And yes it is applicable for KCET also

The law will be implemented from 2 Feb 2019.

So yes from academic year 2019-2020 onwards