B.Tech

Syllabus
Almost all of the engineering examinations are known to contain 3 sections namely Maths, Physics and Chemistry. The questions that are asked within these sections are known to contain topics covered in 11thand 12thyear of schooling. Although the type of questions asked may differ and so may their weightage, but these examinations are known to contain certain fixed topics which are:
Mathematics
Vectors, Matrices and Determinants, Probability, Three Dimensional Geometry, Theory of Equations, Sets and Functions, Complex Numbers, Permutations and Combinations, Limit and Continuity, Binomial Theorem.
Chemistry
Chemical Kinetics, Chemical BondingIonic Equilibrium, Chemical Thermodynamics, Gaseous State, Polymers, Alcohol Phenol and Ether, Redox Reactions, Atomic Structure, Surface Chemistry.
Physics
Current Electricity, Heat and Thermodynamics, Electrostatics, Wave Motion, Simple Harmonic Motion, Laws of Motion, Ray Optics, Vector Motion, Motion in 2DFluids/.

First and foremost focus on basics, any programming language like C, CPP, Java, Python, etc. Data structures and algorithms
Networking
Database
Operating systems
Problem-solving skills
Pointers
Topics
Linked List
Stack & Queue
Deque
Trees
Heap
Recursion
Itself one of most important topic. (Both interviews as well as Competitive programming)
Time and Space Complexity Analysis
OOPS
It is quite handy if u have in depth knowledge [go through atleast one of the good books completely] of based on any of the OOP languages (Java/C+) and also try to get proficient in coding in one of these languages besides C. To have knowledge of both will also be quite handy. DBMS
OS- (very important)
Computer N/W-
Algorithms
Advance- (Flipkart, Direct and Amazon)
1)Advance data structures- (Segment tree, Tries, BIT, Suffix Array, heap)
2)Algorithms (Djikstra, Floyd Warshall, Euler path, hamiltonian path, KMP, MST, Union Find Data Structure)
3)Combinatorics (Recurrence Relation)
4)DP
Do practice coding on online platforms and do projects related to higher tech subjects- web, python, android, ML, etc. Participate in college events - It will make companies think that you are active. If you are organizers of any event or organisation in your college, that will be an added advantage
Know programming very well! - Check out for various cases (not so common). It will be a great advantage if you are expert in something else such as php,. Net, android etc. Develop algorithms. - The skill to develop algorithms is really important. Try to solve various problems. It will help you a lot.
Reasoning is required.
Basic Maths, aptitude may be evaluated! So prepare in those fields.
Be confident.