IIT

It depends from person to person. I personally believe that you should definitely drop for JEE. You know you are afraid that you may lower your marks, which has a very low probability of happening. But if you drop and do well next year, you could easily pursue CSE, which you have always wanted to. And let me tell you, my friend, if you give your 100% next year, you shall get CS. You just can't let your fear stop you from trying. If now you let your fear stop you, then you are in a big trouble. Don't even think about marks, just go study.

Allen is the best institute for this.

Fresh Aeronautical Engineers from IITs can get starting salary of Rs 6 to 12 Lakhs per annum in India depending on the type of company. Salaries in Western developed countries will vary between 60K USD to 100K USD per annum. Some brilliant students who have written and published technical papers may get higher salaries in countries like USA or Germany.

Your question is not clear. You may reframe your question.

M.Tech Electronics at IIT is worth a ton of gold (very high values) in today's job market in India and abroad if you have done your graduation degree from a routine run of mill engineering college. Degree from IIT will not only help you to learn from top faculties on subject in India but you can enrich and get benefits in your service career with IIT brand value whole life.

Hi Sanket,
Dropping a year may not have any effect on your career, you may take your all the chances to get admission in the reputed colleges of India.

Hi Harsh,
Since, you want to pursue chemical engineering, so the best college other than IIT-Mumbai is ICT-Mumabi. For this, you need to take MHCET exam and score really well in that.
All the best.

Hi Pratap,
IIT JEE is among the toughest exam on under graduate level, so you need to work very hard for that. Considering your category, it will be little easy for you because the cut-off for SC category is very less.
All the best.