Gujarat

It will depend on the counselling pattern and zonal distribution of qualified candidates whose ranks are above than yours. So give first preference to IHM Chandigarh and then others. Do not select Delhi as you will not get it at this rank; it is very low for IHM Delhi.

Minimum 50% is required to get admission in this field.

Sorry, I don't know exactly but in July first week, it is ending.

First of all, you can't expect placement in New IIITs. New IIITs will not give you good industry exposure. It will take at least 10-15 years to get established. Better to go for old GFTI colleges rather than going in New IIITs.

Yes, you can apply. To get admission, either you have to crack GUJCET or JEE Mains with good rank.

Yes, you can apply for NIRMA. The campus will take students with scores similar to yours. Apply directly and attend the counseling.

Top Electrical Engineering Colleges in Gujarat are mentioned at the link provided below:
The ranking is based on engineering ranking published by The Week. https://www.shiksha.com/b-tech/ranking/top-electrical-engineering-colleges-in-gujarat/47-2-109-0-0.

Dear student,
DIT University welcomes you for admission, regardless which state of India you belong to.

You should go for NIT calicut.