Class 12-science

See, first, do complete your graduation with B.Tech in any field you are interested in. After that, you have to appear for the entrance exams GRE or TOEFL, or IELTS for foreign universities. According to the score in these exams, you can get the admission in aboard for MS course. You can also get scholarship if you scores good. Your B.Tech results will also impact to get admission abroad. Hope this helps you.
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See, you should not go for the diploma or engineering because you have less marks in 12th which will impact bad on your placements. Because almost all companies allow only those students to sit in interview who had minimum 55% marks in 10th and 12th both.
So, you should try for other course.
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No, only students who had PCB in 12th class can go for GNM course. You are not eligible for that.
You should go for other courses like B.Tech, B.Sc, B.C.A, B.Des, etc.
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You should go for BCA or B.Tech with any field in which you are most interested. As you had CS, then you should go for B tech with computer Science branch which is 4 years course. BCA is 3 years degree.
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You should go for B.Tech or BCA course and you can select the field in which you are interested like Mobile technology. You can do your B.Tech in same field. Thanks.

See, if you have maths, then some options are like B.Tech, B.Sc, BCA, B.Des and many more. According to me, you should either go for B.Tech or BCA. If you are from Bio, then you have options like MBBS, BPT, B.Pharma, B.Sc, etc.
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It is really sad to know that you failed in physics. But don't lose hope. There are a no. of career options available to you. But you need to mention your field of interest so that get a rough idea that in which direction you need guidance.

It would be really good if u could give us a hint about your interest. There are a no. of options available to you. But you atleast need to tell your interest and the field that you are interested in.

Through this percent, any scholarship will not get. I think, so there is no scholarship in fashion designing.

You need to see both of them are different, MCA will lead your career in computer application, MBA in management, and both have different requirement for minimum percentage. For MBA, you have to go through Test and Interview. Unless you don't pursue it from top universities it will be of very less use. You can try in Amity University, Lovely Professional University, Chandigarh University, and Symbiosis University. Please do check if you are ready for technical career or not.