Commerce

Hi,
Yes, you can prepare. You must ensure to have secured a minimum of 40% marks in each paper and 50% marks in the aggregate of all subjects at one sitting only after which you will be declared to have pass the foundation/executive / and professional examination.

There are different CET tests depending on which course you want to pursue. You can check all the details here:
puchd.ac.in

Yes, you can pursue BCA with Microsoft cloud computing & cyber security.

Dear,
Firstly, you need to understand all the aspects of commerce field in class 11th and 12th and strengthen the foundation in economics, accountancy and business studies.
After class 12th only, you need to start the preparation for the same.
All the best.

No, you cannot. You need to be a science student for pursuing nurse training course.

Admissions in DU depend on your best four subject's total percentage. So it matters. If you have got 70%, it's very tough to get in the North Campus.
You can try to give CATE exam for English Honors, and if you get a good rank, you can try for south campus colleges.
Otherwise, it can also be done that, you can try off campus colleges, but the course which you might get would not be the ones you want to study.
So apart from DU, keep other options open as well.

Yes, it is quite possible.The cut off will be announced soon. You need to fill the forms accordingly.

No, the minimum criteria to get admission into DU is to secure 60%. The only way out is if you take admission through quota.

Product designing has gained a lot of popularity in these growing years and it has a great scope if you gain excellence in it.
For getting into product designing you should go for a degree course in designing. Firstly, you should complete your 12th (from any stream with minimum of 50%) and then apply for designing entrance examinations for your chosen institute. NID is a good option for product designing.