hi akash ,

yes , r s salaria is a very good guide for one to practice for their algorithms . 

what is more important is that you will have to be strong at the concepts . if you are strong with your concepts then any good guide like r s salaria will help you well .

all the best

This is one of the books widely referred to by most students. Another one is Introduction to Algorithms by Cormen. However, after you finsh studying and learning from it, then start checking the past year papers for the type of questions and weighatge of topics.