Science

B.Tech and B.Sc both fields are good in their own way. It depends that in which field you are interested in. I would suggest you to go with B.Sc in perfusion technology, if you have interest in the equipment.
The Perfusionist is in charge of operating these machines with the heart-lung machine being the most commonly used one. The machine basically takes the blood and oxygenates it while the heart remains dormant during the surgery.

B.Sc in PCM or CBZ will be a good choice, or you can also go for engineering, if you want to enter the technical field.

You can pursue M.Sc in Quantum physics, even if you haven't studied it. In your graduation, you just have to come up with the new syllabus. And, remember to cross check the same thing with the college you are trying to apply in.

B.Ed is the best field to enter the teaching field, because it is much valued in India, and if you want to do some research or complete doctorate in Science stream, then go for B.Sc and M.Sc.

Hello Akriti, yes for economics (H) in DU, you should have Maths till 12th class but it is not necessary to include it in best 4 subjects (BFS). Yes economics definitely should be included in BFS for Economics (H) else you will face deduction.
All the best!

B.Sc in Perfusion Technology Eligibility criteria is:
The candidate must have cleared 10+2 or any equivalent examination from a recognized board under the Science stream with compulsory subjects Physics, Chemistry, Biology (Zoology or Mathematics) and English with 50% minimum marks. * The minimum cut-off is 45% which varies depending on the institution. There are many more career details in Best B.Sc Perfusion Technology Colleges in Bangalore.

Admission is through counselling, based on the rank obtained in Vishwavidyalaya Entrance Test (VET). For cut off marks, you need to get in touch with the college students through social media or in person as its not available online.

Follow the link below for details :
https://www.shiksha.com/university/sharda-university-su/Surat-exam.

Hi Joyal,
Canadian universities are very strict and competitive. You must work hard on your academics and have good marks. Recommended percentile in 12th is 75% and above for any good university. Take your IELTS recommended score is 6 in every section. Be good in your studies and extracurricular activities. Now, the admission process takes a year, by this time of next year you must submit your application to enroll in 2020. Please check major university websites for information. Related to admission, deadlines, programs etc. Decide what to study. After going through the websites you will gather idea of the entire process.