Am I Eligible for Indian army as I have studied till 7th only???? What are the basic eligibility conditions???

Sorry to say, but you are not Eligible for Indian army as you have studied till 7th only. the eligibility conditions for the Indian army are as following:

Eligibility:
The applicant should have passed 10+2 Examination or its equivalent with a minimum aggregate of 70% marks in Physics, Chemistry and Mathematics from a recognized education boards

Age Limit:
A candidate must not be below 16½ years and above 19½ years on the first day of the month in which the course is commencing

Nationality:

A candidate must be a citizen of:

A citizen of India, or

A subject of Nepal, or

A subject of Bhutan, or

A Tibetan refugee who came over to India before 1st January, 1962 with the intention of permanently settling in India, or

a person of Indian origin who has migrated from Pakistan, Sri Lanka, Burma, East African countries of Kenya, Uganda, the United Republic of Tanzania, Zambia, Malawi, Zaire, Ethiopia and Vietnam with the intention of permanently settling in India.

Top Army Schools in the country is as follows please have a look on that