Which is better SVNIT chemical or Nirma computer?

You should opt for SNVIT chemical. If you are inclined towards it and the placements are very decent with many recruiting companies. You will find a diverse environment here and will develop bonds and learn many new things. Also, the fests are one of the major attractions that give you a great experience of college life with new challenges whether you are in an organizing team or participating team. At the same time, the JEE ranking should be high enough to get admission to opt for chemical.

If you are interested in CS, then you should score 9.4+ in your first year. But if you have not studied CS before especially programming languages then it would be a very hard nut to crack. You can work on your weak topics in 1st year as nothing much is taught. If you are in Nirma then you would miss the college and hostel life, the best memories of college life.

If you like chemical engineering then go for it, never get trapped by the fickle-mindedness of people in society. Since in India, the tag of your college determines your intelligence level and capabilities so if you compare SVNIT Chemical with Nirma CSE, I would suggest SVNIT due to the opportunities it provides.