Every year i write this answer to help you in deciding this crucial question. Here is the version for students aspiring for engineering admission in 2019.
CATEGORY 1: Must Fill
A) JEE: JEE is an all India common engineering entrance examination which is conducted for admission in various engineering colleges and courses all over the country.
Examination Pattern: JEE-Main Exam has two papers, Paper-1 and Paper-2. Candidates may opt for either or both of them. Both papers contain multiple choice questions.
For April attempt forms will be available between 08 Feb, 2019 - 07 Mar, 2019.
Also if your state is conducting seperate examination for engineering entrance, you must apply for them.
The other exams you can think of if you feel admission in above colleges will be a tough task for you you can apply in one or two of below mentioned examinations.
CATEGORY 2: OPTIONAL
A)VITEEE- For admission in VIT. This year it will be in month of April and will be a computer based Test. The forms are already on their website.
B) SRMJEE : Forms are already available on their website
C)MANIPAL ENTRANCE TEST (MET-2019)-Forms will be available soon. LAST DATE TO APPLY IS 15 MARCH 2019
D) COMEDK: This is one of the good exams for students who can't perform very well in JEE/ BISAT. Scoring here is not that tough plus you have some good college available through this exam.
Only issue is the delayed counselling. for details, visit their website.
Well in case you want to know more about exams and forms do feel free to contact me through your comments on the blog.
ALL THE BEST!!!