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Hi,
Let me breakup the syllabus/ contents of these interrelated and confusing options.
Electrical engineering is all about learning to handle electrical machines like motors-DC, synchronous AC, asynchronous AC, etc., layout and design of the different types of electrical equipment and power systems used in the industry, control systems (even in electronics) used for automation and how they're used for designing advanced electrical and electronic systems, and if your college offers, a course on communication systems which would lay base to the vast telecommunications and network engineering topics.
Instrumentation engineering is a specialisation of electronics engineering and involves a deeper understanding of instruments used in various industries, using electronic sensors and transducers to actually implement the control systems which electronics engineering teaches you.
Electronics engineering is a vast area, consisting of VLSI (Very large scale integrated) design, robotics (which requires some basic knowledge of electronics, mechanical and software, and is better to focus on one area of robotics rather than all the three), communications and the evergreen embedded systems design which leads you to advanced VLSI, computer architecture (more computer science oriented) and advanced networking systems courses (if you also want to add communications, it goes great with networking).
Robotics involves, as I said, basic knowledge of electronics, mechanical and software, as robots are basically mechanical devices, built with electronic components, driven by software. Mechatronics basically combines electronics and mechanical aspects of robotics.
I hope this helps you to choose wisely.
All the best.

Dear Tanvir Singh, As you are from Punjab, then I highly recommend LPU for the CSE degree programme based on the following points:
Great Placement: LPU has a good placement record for CSE students. Every year more than 500+ companies including national and multinational companies visit LPU for placement. A few of them are Microsoft, Amazon, Adobe, etc. In which they are placed. The maximum package availed for CSE is 42 LPA. PEP Classes- LPU provides placement classes to all the students from the very first year who opt for the placement. These classes help students for placements so that they can get selected in the pre-final year because the companies will start visiting for the recruitment of students from a pre-final year. Some of the students go for internships also in their final year. The Knowledge Review has rated LPU as the 10th best Training & Placement Institution in India. Industry Tie-ups: B.Tech in CSE has tie-ups with industries such as IBM, Intel, Xebia, Upgrade. Comptia, Transorg, Geeksforgeeks, etc. That help students to explore themselves more in their field. Scholarships: LPU provides scholarships to bright students every year worth crore rupees to all the students based on their academics, extracurricular activities, and other factors. Specializations Offered: CSE students get many specializations while studying CSE to enhance their knowledge according to their interests such as Artificial Intelligence, Machine Learning, Cloud Computing, Cyber Security, Data Science, etc. LPU also offers B.Tech (Hons. ). In the CSE programme. Apart from this, many opportunities and scholarships are there in LPU while studying for bright students in academics and extracurricular activities. I hope this helps
Thanks.