CBSE 10th

Hi, it depends on your interest. Every field has different scopes. So you choose your stream wisely in which you can score better and had interest in it.
You can go for science because it has a vast scope in future.

It varies from institute to institute. You can visit Shiksha's website for the nearest coaching institute.

Diploma can't get in NIT.

Admit card of class 10th is not required for admission to B.Ed but the certificate is compulsory, so is class 12th certificate.

You have to clear the qualifying exam which is class 12th boards before applying for the UG program.

This depends on your interest and on where you can get admission based on your percentage. Answering an aptitude test for this might help you make your choice. Do a search for aptitude test centers with counselling near you or you could try out an online aptitude test but you will not get any counselling regarding the aptitude test results then.

Yes, there are some chances to get a government college for Diploma. However, your percentage is very low and they provide merit based admission.

No, first you have to pass class 12th exam. Then only, you will eligible for this.

Yes, this certificate will be useful in taking admission bin AUCET. You can use your A certificate.