I'm scoring only 50-55 in my CLAT mocks, Can I get into Nalsar?

It depends upon whether or not you can improve your score over time. Here are some tips which can be helpful. 

• If you have enough time until the final exam, try to score better in mocks. It needs time and efficiency. 
• However, if you are seemingly running out of time, then it is best that you stop scrutinizing the required syllabus, and begin solving more mock papers so as to analyze them later. Find out your weak areas and strategize accordingly. Often strategy can make a huge difference.

So, study smart and efficiently.