Can I use my B1/B2 visa

[raghuraj]

I got stuck in India from past 4 months regarding my H1B query. So it might take another 2-3 months to solve the query. I am having my B1/B2 visa valid till 2017.I traveled on this visa only once in 2007. Later I got my H1B and was working in US on this visa from past 2 years

My question is Can I enter into us on B1/B2 visa as this is not cancelled. How can we know if it is cancelled or not. As I can see on my passport there is no cancellation or any pen mark on the visa

1)What are the questions I can expect at port of entry if I am entering into USA on B1/B2 as earlier I entered into US on H1B

2) If my H1B is approved after 2or3 months I need to come back to India for the H1B stamping and get the H1B stamping and return to US on H1B visa.Does it create any prob again at port of entry