Engineering Entrance Exam

Just focus on JEE main because there is time.If you will do JEE course properly then you will get easy to prepare for 12 board exam.

Hello Vishal,
If you just happen to score more than cutoff off, it will not get you anywhere. Cut off is only to restrict number of students who can appear for JEE Advanced. For getting into NIT and good NIT, you need to score percentile of at least 75 in JEE Mains.

http://bitsadmission.com/hdmain.aspx
Check this link.

Ofcourse, you can start your preparation for the exam. Just start clearing your concepts. And do watch NPTEL videos in YouTube which will help you a lot to make you move forward of others.
All the best!

The point is if you attempt all the questions, then there will be bonus questions for you to gain extra edge.

Hello Madhukar,
Admissions to undergraduate courses in Australia are not based on any entrance exam but are based on marks obtained in your 12th. I would however advise you to take help from a specialist agency dealing in admissions to Australian universities as they would know all the required nuances.

To prepare for GATE, first check the syllabus of GATE and then prepare accordingly. Just check all the concepts of second year and third year. After that try to solve and practice as much numerical as you can from different books. Take one topic at a time and solve different questions. First choose a subject and complete it topic wise and then move to other. Choose the subject in which you are strong so that you can complete it early. Accordingly, you can choose subjects as per your difficulty level.

Refer to NCERT books, keep your concepts cleared, try solving more and more questions and of course maintain contacts with your teachers.

well it's pretty strange question. GATE is not at all like banking exam in which there is a probability to crack it in one month. GATE need lots of prepration, dedication and deep study which practically can't be done in 1,2 or in 3 months. You need to prepare for it in atleast 1.5 year in advance. It's simply not a cup of tea.
All the best!

No, you have to do much more preparation because it is very tough.