Engineering

WBJEE is conducted only once a year. You have option to give WBJEE after 12th class and in the drop Year just like JEE Advanced.

Well, it totally depends on which center of coaching institute you want to go. So, If you want to choose between some coaching institute check their previous year performances and then take the decision. Also, there is too much of change of teacher due to competition so be careful about the faculty

According to previous year cutoffs, SC/ST students or a PWD can get CSE in MNIT but for General/OBC students it's almost impossible.

Yes, you can appear for JEE Main and Advanced again after completing your 12th board exams. There is no limit on the number of attempts for JEE Main but for JEE Advanced you can attempt a maximum of two times in consecutive years. However, you must fulfill the eligibility criteria for the exams in o

You can get detailed JEE Advanced Exam Syllabus on their official website. They have well defined the topics of each and every chapter in the syllabus to be more accurate.

First of all CONGRATS!
Considering you belongs to General category probably you can get PEC, SMVDU, SLIET, Guru Ghasidas Vishwavidyalaya, GKV etc. If you belong to some category then you have far better options. (I have recommended the colleges according to previous year cut-offs and results may vary

Yes, a smart phone or a laptop is must in engineering because it would really help you to complete your assignments and during the preparation of your exams.

You should try for state entrance examination if you want CS branch in a good college. You can get Tier 3 college with that score in JEE.

Yes it would be considered as incomplete.