Sir,is it right to do prepare for NDAexam before intermediate and to do prepare for neet after intermediate.does it affect me?

You can prepare for both the entrance exams no doubt but refer to following points :-

Why do you want to give NEET Exam? Do you want to get admission in MBBS (Bachelor of Medicine and Bachelor of Surgery), BDS (Bachelor of Dental Surgery) ,BHMS (Bachelor of Homeopathic Medicine and Surgery) or ang other medical courses ? Now if a student wants to do MBBS only that too in government college then he/she must prepare from 11th standard itself because the competition for MBBS in government college is very high.

Age limit for NEET Exam for general category students is till 25 years. But it is best considered when a student takes admission in MBBS or any other medical course at early age (18-19) so that further studies can be done easily.

Not everytime a student wants to do MBBS. He/she can also opt for other courses like BDS, BHMS which are also good. These courses have less cutoff than MBBS. So whenever you give a entrance exam keep a backup plan with you. Suppose a student doesn't get MBBS due to less marks then he/she must be ready to opt for another course.

Other than NEET Exam for medical courses  there are other courses which do not require entrance. Suppose a student has not even cleared the NEET Exam then he/she must have decided another course or whether to take a drop or not.

Preparing after 12th class for NEET is not at all impossible but you must also note that there are students who are studying for it from 11th itself and that's why the competition becomes tough.

Now it's not at all to worry about it.

Before class 12th as mentioned you can study for NDA (National Defence Academy) Exam. If selected the students are then shortlisted on the basis of written exam for SSB (Services Selection Board) Interview.  Medical checkup is done. The merit list is then prepared considering all the factors after which admission is granted in NDA. This exam offers a career to students to become Indian Army/Navy/Air Force Officer.

All I want to clear is these both are different fields. There are many students out there be it freshers, repeaters who are willing to take admission in MBBS in government college.

(Student can also take admission with low scores in NEET in private colleges but the fees of private medical colleges are huge that's why the competition increases.)

Make a decision according to your interests.

If you want to give both the exams there's no problem in it but then work extra hard to achieve it.

If not MBBS then BDS; if not BDS; then BHMS.

This is not to degrade anybody's capability in exams but it's knowing about reality and always having backup plans.

If you still have any queries feel free to ask in the comment section down below.