Added Topic wise multiple choice questions in computer science to problem sets (#7453)

more/problem-sets-competitive-programming.md

@@ -122,5 +122,6 @@
 * [TalentBuddy](http://www.talentbuddy.co/blog/)
 * [The Ultimate Topic List(with Tutorials, Problems, and Templates)](https://blog.shahjalalshohag.com/topic-list/) - Shahjalal Shohag
 * [Timus Online Judge](http://acm.timus.ru)
+* [Topic wise multiple choice questions in computer science](https://www.geeksforgeeks.org/quiz-corner-gq/#C%20Programming%20Mock%20Tests) - Geeks For Geeks
 * [UVa Online Judge](https://uva.onlinejudge.org/index.php?Itemid=8&option=com_onlinejudge)
 * [Школа программиста](https://acmp.ru)