Taxability of nominees and executors

1) Assessee expired with a WILL. 2) Two persons are named as EXECUTORS. Question: As per sec. 168 of the Income tax Act, i guess they will have to apply for a separate PAN as AOP, since 2 executors..and they will be assessed as AOP. Kindly confirm. 3) Now, the nominee has received the Mutual funds and they have sold it also and proceeds are lying in the bank. This is the money of the Estate which has to be distributed to various persons. Question: Since MF's are sold by nominee, will she be liable to Cap.gains .........(do note, she is only a nominee...). OR.......Will the Estate of the Deceased (the AOP) be taxable. There is obviously supporting evidence of these that they are nominees. 4) The nominee can transfer the bank balance of the proceeds of MF sale to the AOP and the AOP can declare it as taxable under them, is that fine 4) Need the correct position for the above 3 and 4. Accordingly, suppose the Nominee pays out the beneficiaries from those proceeds and after that discloses the Cap.gains in their own hands and pays the cap.gains tax, is that OK for the dept. OR will the dept. say that it is the AOP cap.gains and AOP to pay tax afresh. If so, then it would be double tax since the nominee has already paid tax under their personal PAN. So how will the AOP get credit for it since the AOP PAN is different. Need clarity on the above.