Read 7 comments as:
Filter By
Find out about the place you are going to. Read up about the firm and their practice.'
Read up your CV and know it inside out.
Find out common HR/Law firm questions on the internet and have answers ready.
If you know someone working there who you trust, you can ask them about the practice.
Have one or two good questions to ask them at the end of the interview in the event they ask if you have any questions for them.

If you identify any limitations in your cv, have a pre prepared answer.

No one has a perfect cv. People who get the job don't have a good cv, they just make a good impression in the interview. Remember that people are not only looking for competence, but people they actually want to work with (so be good natured), and confident.

Best of luck!
What about contract law and companies act? Especially if you don't have anything from them on your CV.
Keep the following in mind (non-exhaustive):
1) About you - your personal life, background and interests.
2) About the Firm - its history, why that firm, why that specific team, about their recent big transactions, how you can add value to the firm
3) About the preferred location - why that city, etc.
4) Basic HR questions (very important) - your 5 year plan, LLM plans, strengths, weakness, overall personality, etc. [This is basically never ending, I can go on and on]

Law:
5) Basics of Contract Act
6) Basics of Transfer of Property Act
7) Basics of Companies Act (irrespective of the teams, basics is very important and a must know)
8) Depending on the team that you are interviewing for, apart from the above mentioned basics, you will need the relevant detailed domain knowledge of M&A/Securities Law/Banking & Finance and so on, team wise.
9) Your CV, inside out - no compromises there. Be 100% ready.
10) Basics of CPC also helps.
In general, stay abreast to recent amendments too, SC/HC mainstream landmark judgments in the area of law you are interviewing for. [Amendments + latest judgements]

All the best! I know the list is pretty long and it might get even longer, with more inputs. But, these pointers should suffice for an interview.. The more you read, the better it is!