If you want to prepare for the CUET PG exam for an MPH program then you  should focus on the coqp 19 syllabus because it aligns better with requirements of a post graduate program in public health MPH .IT  cover subjects like general aptitude research methodology and domains specific subjects related to the health science. COQP11 is mostly design for specific undergraduate program the may not be relevant as preparing for an mph program. The areas you have to focus for preparing for CUET PG  is general aptitude and domains specific subjects like Public Health BIOSTATICS  health economics ETC.Refer to the previous year question papers to understand the exam pattern better. CUET