Hey guys,
As a 3rd year undergrad student, I am still waiting for a campus intern selection.

So for those who don't know about Reliance Industries Limited. It's an Indian multinational company which owns business across India engaged in energy, petrochemicals, textiles, natural resources, retail, and telecommunications and run by none other than Mr. Mukesh Ambani.

While I was preparing for the interview, I didn't have a lot of insights as to the type of questions they'll ask in the interview, so I basically tried to study more or less everything during a span of 1 week.
So for all the students who are waiting for an interview with Reliance , I've just one thing to say- "Rest Easy"
The whole process consisted of only 2 rounds:
Round 1: Online test with mathematical aptitude problems which are quite easy if you know basic mathematical concepts like - Time and distance, Work and Time, Ratio,Profit and Loss etc.
Round 2: Out of around 200 people who gave the test, 11 were selected. If you reach till here, trust me, you've almost got it. All you have to do is be thorough on your projects and include a "Real Life Project" in your resume. The only thing they asked me was the Real Life application of my projects, which I didn't have as two of my major projects was a "Harry Potter" game in C++ and an Android app! The interview lasted about 10mins.

In a Nutshell:
I didn't get the intern but if you've an interview scheduled in Reliance, it's a piece of cake if you want it. Just be confident and thorough with all your projects. No technical preparation Required, though it's never a harm to study a few Algos and DSs with this as an excuse :P

Hope this Helps.
Stay Safe, Stay home, Code away.