JEE Advanced

You should be in top 20 percentile or the previous year cut off was 74 marks in general category. So, this year it should be near this.

No, you can't. To appear in JEE Advanced Exam, you need to first qualify the JEE Main Exam. Only then, you can take the JEE Advanced Exam. If you want to take the JEE Advanced Exam then, you should also have to satisfy the other eligibility factors. JEE Advanced exam will be conducted on 27th May 2019. So, prepare yourself well.
Best of Luck!

Hello Vishal,
You have scored a percentile that is above 85. It is expected that this year around 3,00,000 students out of almost 10 lacs who appeared will be cleared to appear for JEE Advanced. This is about 30% of the total number, which translates into a percentile of 70. As you have scored more than 85, I am sure you will be in the cleared list of candidates who can appear for JEE Advanced. However, I would like to advise you to have patience till the end of the month before which national testing agency is expected to announce ranking as well as the clearance to take JEE Advanced.

Hello Krishna,
It's very nice to hear from you that you want to take admission in a college that accepts JEE Mains ranking as the criteria for giving admission. Yes, there are plenty of private or other engineering colleges in India which accept students for admission based on their ranking in JEE Mains. I am attaching a link that will give you the complete list of such colleges including of course IIT and NIT which you can ignore if you want.
https://www.shiksha.com/b-tech/ranking/top-civil-engineering-colleges-in-india-accepting-jee-main/53-2-0-0-6244?pageNo=3

Yes, you are eligible for getting a seat to pursue CSE. Your scores in JEE Mains and JEE Advanced are good enough but some universities take their own entrance tests as well so for those universities you have to check their criteria to get admission.

Please visit this site first
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjd0NzModzhAhUZfSsKHfLtA6UQFjAAegQIBBAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H.

Please visit this site first
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjd0NzModzhAhUZfSsKHfLtA6UQFjAAegQIBBAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H.

Hello dear,
Heartiest congratulations for qualifying JEE advance but at the same time I want to mention that for JEE advance one have to fulfill the criteria which is-
The candidates will have to satisfy at least one of the following two criteria for admission to IITs: The candidate should have passed 10+2 or equivalent examination with an aggregate of at least 75%marks. For SC/ ST and PwD candidates, there is a relaxation of 10% as they need the aggregate of minimum 65% marks. Second you have to under top 20 percentile of your boards.
Best of luck.

It is upto cut-off of this year. So, you have to wait for the result announcement and cut-off declaration. Only then, you come to know you are eligible or not. But as you said, you have been attempted 260 marks question according to me you should be eligible if you have been attended atleast 150 marks right question.
Best of luck.

Hello Teja, I am afraid with just 55 percentile, your chances of qualifying for JEE Advanced looks quite slim to me. However I would like to advise you that please wait till the end of the month of April since National Testing Agency is likely to announce results and ranking by then. Best wishes to you.