Can I visit on B1/B2 while my H-1B is being processed?

Yes, but be careful:

• You can visit on B1/B2 while H-1B petition is pending
• You cannot work during the visit
• If H-1B is approved, you must leave and return with H-1B visa stamp
• Entering on B1/B2 with intent to start H-1B work is not allowed

Best practice: If H-1B is approved, get H-1B visa stamp before entering to start work.