Engineering

yes absolutely. you can do msc in mathematics. you have to keep an update on their official website as to when they release their regsitration form and fill it up on time.

yes. mathematics is a must in class 12 level if you want to apply for bsc in computer science. although the requirements vary you can chave a check at the respective college.

yes absolutely. you can continue your third yeear since bsc course duration is only of 3 years and you cannot get the degree by studying for 2 years.

You have to give the GRE examination if you want to do MS from other countries and then score at least 330 out of 340 to get a scholarship or funding.

The decision would be based on your interest areas and long term career plans. If you want to pursue a career in academics / technical / research areas then M.Sc. +Ph.D in pure Science is better. However if you want to peruse a career in a specific field of biotechnology the B.Tech+M.Tech is better.

You should give top priority to Jobs. Because jobs are very rare today, please upload your resume on all important job portals like Naukri. Com, indeed. Co. in, freshersworld. Com, linkedin. Com etc. Further you can pursue the part time B.Tech, AMIE etc. During the job also. So only focus on jobs only.

As you have completed your B.E. , you can eligible to apply for MBA !