I can understand the curiosity you are feeling to know where you lost marks or what you did wrong. It is obvious to feel this way and it is a general feeling for every student. Below is the link, you can go through it, it has all the questions as well as all the answers:-

https://www.resonance.ac.in/answer-key-solutions/Board/2019/CBSE/AnswerKey.aspx

Hope this helps and all the best for your future endeavors.