Hello Komal!
Admission into colleges of Delhi University for B.A. Hons. in Economics is done on the basis of your class 12 Board results.
Every year, colleges affiliated to DU release their cut-off lists for admission into various courses offered by them. Usually, the cut-offs of DU colleges are very high. But there are some colleges which keep a low cut-off.
As of 2019, the cut-off lists are yet to be anounced. Keep checking the official website of Delhi University and Careers360 for recent updates.
Here is the link of DU cut-off list for the year 2018. This will give you and idea whether you can admission or not.
Http://www.du.ac.in/cut-off.html
Feel free to ask for more queries and career advices.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile