is old pan card valid

Yes, your old Permanent Account Number (PAN) card remains valid. The PAN is permanent, and the introduction of the upgraded PAN 2.0 system does not invalidate existing cards, even those without a QR code. You are not required to apply for a new card unless you need to make a correction or update to your details. However, your PAN may become inoperative if it is not linked with your Aadhaar number, provided you do not belong to an exempted category.