India

The admission process details will be finalized soon, based on that you can estimate your chances for admission.
The cut-off varies so cannot give a number.

To get admission in an engineering college in Gujarat, of course, other than IIT/NIT, you have to appear for the common entrance test conducted by the Government of Gujarat, so marks scored in JEE Mains or class 12th board of Gujarat has no relevance.

Hello Bhumika,
Mumbai have better colleges when compared to Gujarat. Students of Gujarat try their luck in colleges of Mumbai. I remember when I was searching for a college, most of my batch mates filled form of colleges in Mumbai.
I hope I answered you. Thank you for the question.

The minimum package differs from Rs 5 to 12 lakhs. The certificate is recognised across 140 country in the world.

You can, it all depends on what course you opt for. CS in India makes you a professionally competent person to go for any further level. Good luck