Hello,

Basically colleges don't prefer the students who have failed in their 10tg Board examination. So now you have three choices left-

1. Appear for Compartment Examination and clear your failed Subject

2. Don't appear for Compartment this year and appear for 10th again next year

3. Give your 10th from NIOS Boards (National Institute of Open Schooling). It is not very difficult to pass out from an NIOS Board School.

Or if you were an ICSE Board Student then it's not very thing if you have failed in one of the Subjects. But you will have to pass either in Mathematics or in Science then only you will be considered a pass Candidate. But if you fail in Science then you won't be able to pursue Science in your 12th and if you fail in Mathematics then you won't be able to choose Mathematics in your 12, neither in Science nor in commerce and if that happens you can't become an engineer if you're willing to become an engineer because Mathematics is compulsory in 12th to apply to B.E or B.Tech Degree.

Good Luck.