Regarding placements there will be two type of aptitude rounds. General and technical aptitude rounds.
To describe the topics covered in general aptitude,
- Numbers
- HCF and LCM of Numbers.
- Decimal Fractions
- Square roots & cube roots
- Average
- Problems on ages
- Percentage
- Profit & loss
- Ratio & proportion
- Time & work
- Pipes & cistern
- Time & distance
- Problems on Trains
- Boats & streams
- Alligation or Mixture
- Simple interest
- Compound interest
- Logarithms
- Area
- Volume & surface areas
- Calendar
- Clocks
- Permutation & combination
- Probability
- Reasoning
- Puzzle Test
- Sitting Arrangements
- Blood Relations
- Data interpretation
As far as technical aptitude round is concerned, you should have knowledge in your core subjects in your streams and little about programming knowledge if your are from non-IT streams ( for computer science or IT students their core subjects itself are programming). Let me tell you some of the area to cover if you getting into IT industry irrespective of the streams.
- Data structures.
- Networks
- Programming languages like C, C++, java, python.
- Database concepts
- OS concepts
- software Testing.
