online

Hello Sahaj,
From the information available at this moment of time, the registration for JEE Mains 2019 is set to begin from first week of February and will close in first week of March. All other relevant dates are presently in the realm of imagination and are based on the experience of past year. I am attaching a link that will give you all the required information about JEE Mains 2019 that is being conducted by National testing agency. https://jeemain.nic.in/webinfo/Public/Home.aspx
Best wishes to you.

Hi,
You can refer to this link for admission details https://www.shiksha.com/science/course/m-sc-in-zoology-maharshi-dayanand-university-Rohtak-270858
The application dates are not out yet. I would advise you to keep a track of the official website to know the when the applications are open.

There is no college which can give online Bachelor's in engineering. You'll have to attend the classes and your attendance should be 70% to appear in the exam. And
yes, you can get lateral entry if you have Diploma.

Hello,
TIFR GS is an entrance exam conducted in December every year. Till 2018 TIFR GS exam is pen and paper based but from 2019 i.e. TIFR GS 2019 Exam is online test.

According to me both are great. You can take educational coaching both online and offline. Online mode will help you in writing and comprehension sections. While offline mode will help you in understanding the course material.

As per the internet research, only IIT Roorkee - Indian Institute of Technology offers M.Tech. In Geomatics Engineering as a full time course for a duration of 2 years.

Hi!
You should contact the examination officials directly for the information. They will be able to guide you better.

It is not up to you. It fully depends on colleges, where you are looking for admission. And, when they announce tier notification for admission.

Online study material might not be available but you can go for books and solved paper in the market or online purchasing of books.
All the best.