Can you answer my problem about 12 a?

In reply to your query,

Section 13: Section 11 not to apply in certain cases: 

1. Entire income from the property held under a trust for private religious purposes which does not enure for the benefit of the public.

2. Entire income of a charitable trust or institution created or established for the benefit of any particular religious community or caste.

3. Entire income of the following charitable/religious trust:- 

a)      where any part of the income of such trust is used for the benefit of any person specified under sec13(3)   or

b)      Where any property of the trust id used for the benefit of any person specified under sec13(3)

4. Entire income of a charitable /religious trust whose funds are not invested in modes specified under section 11(5).

For doing religious activity I have to get another 12 A with status of Religious trust. For doing religious types of work, Helping priests and repairing religious temples.