Colleges in Delhi

Yes, you can migrate easily.

GGSIPU is now using JEE Main scores for B.E./B.Tech admissions. So CET code no. 131 is void now. Now come to the your point, The school from where your son has completed the 12th i.e Air Force School Hindon, Ghaziabad is falling under the Uttar Pradesh state jurisdiction. So yours son 12th class will be considered from the U.P. instead of Delhi. This is the reason yours son has been considered as outside Delhi for admission in GGSIPU Delhi.

Yes you can do the M.A. In Political Science from IGNOU after graduation in engineering. The eligibility criteria is given below. Eligibility : Bachelors degree or a higher degree in any discipline from a recognised University. Course fee : Rs 9000/.