gift deed for gift of money through cheque by close relative

Is it compulsory to make gift deed in case of gift of money through cheque by close relative?

Is it required to be made on stamp paper?

Is affidavit required to be made for such gift?

Is compulsory to noterize gift deed?

Dear Shail,

It is mandatory to gift the amount  thru., cheque.

affidavit is sufficient.

affidavit will be always on the stamp paper.

Ditto

I have one more question.the gift amount  is  already tranfered by cheque. 

Can i make affidavit now? (i.e. gift is already made few months before)

Also gift deed on plain paper is valid for gift  from close relative?