It is very safe as emerald010 said. They don't even look at you while questioning. They also asked me two unrelated questions. Thats it. For me, they gave me interview date after 2 weeks.

For that SHRAM BIBHAG thing, I gave broker Rs5000 and got stamp in 5 hrs. You will find a lot of brokers waiting people like us at shram bibhag gate. They will prepare all documents for you. You just need to give them copies of your Passport, visa, H1 petition and employer's letter that includes your salary and work hours. But don't leave your original passport with them. Give them @ the end for stamp.