If you have qualified CTET under the OBC-NCL category but applied for the EMRS TGT post as a General category candidate, your candidature is generally not rejected only because the categories are different. What matters for EMRS recruitment is the category you selected at the time of filling the EMRS
GPAT scores are definitely considered for admission to MPharm courses, including in Government College of Pharmacy, Bengaluru. In fact, GPAT is the main qualifying exam for most government colleges because GPAT-qualified candidates are given preference in seats, scholarships and stipends. As for the minimum score, there is no fixed cutoff