Urgent !!!! capital gains query

vipul (ca ipcc) (76 Points)

30 October 2014  
1- What is the date of aquisation of DDA flat : Application date, Allotment letter date, Date of full payment, Payment of stamp duty, Conveyance deed date 2- can we receive full payment in cash or there are any restrictions ? 3- can we show cost of improvement with out having it or we have to show some bills against it ? 4- commission on sale can be paid in cash or we have to pay in cheque.? 5- can we show commission on sale paid to family members ? Please answer my few queries