CBSE 10th

You can go for summer activities,though they offer undergrad but that is after 12th

Consistent academic record is a definite advantage for all jobs from reputed concerns. So,try to improve yourself into a First Class. You don't know about your future now. But, who knows, you may get so many chances. If it comes to that, all certificates are important in Life. For State Government Awards, all certificates are important.

Dear Pranav,
There is no minimum requirement. The general standard, you must have first class percentage to get into the top universities.
Regards

Dear Friend, Kindly concentrate on 11th and 12th Class first. Thanks, Friend

If you have interest in engineering choose diploma

Hi Tarun,
For list of Paramedical courses in Hyderabad, kindly refer the link below:
http://goo.gl/VGoXiL
I hope this information helps. Please feel free to revert.
Wish you luck.

Hi Saurabh,
CBSE Improvement Exam can be taken in one or more subjects in the succeeding year only after passing the subject in Class XII. The examination would take place in March and the result will be declared in May.
I hope this information helps. Please feel free to revert.
Wish you luck.

Take PCM group in science stream and then go for software engineering in any reputed college

Yes few companies do check your 10th, 12th and UG marks too. Most of the companies like TCS, HUL, LG etc. need minimum of 60% throughout your educational background as their qualifying criteria. While other companies like Target, Oracle need minimum of 60% only in MBA.