Income tax pan card query

Yes.

He can use the same PAN Card for all his propreitorship business and all transactions that are in his personal nature(like credit card, demat account, etc.) and allowed under Income tax act.
 

Legally, as per Incometax Act, A individual have to get only ONE Permanent Account Number.  Such Individual can use such number for his personal or business purpose of transactions.  Therefore, such person can use PAN card for his different proprietary business purposes is allowed.

No single person should have a two PAN card. He can use only one PAN Card for all his personal transctions. If a single person having two PAN cards he will be fined up to Rs.10000/-

jagadish hiremath is absolutely right.

Extra PAN card is to be surreder with the consultation of Income Tax Authority. Use only one and same PAN card as per instructions given by ITD.