Is it spouse based green card file moved to nearest office from my new address(state)?

I agree with my colleague. Also, not living in the same residence with your spouse is not going to help your case. You should have long term...

How can I find out my case status will be resolve?

You are under F3 category here. How old are your US citizen children? They may be a better option for you....

Passport stamp date before I94 "admit until date"

He should be fine. If there is an issue next time he enters, he can take a copy of the I*94 with him and show the office and explain.

Most international licenses are allowed in CA and you can drive for 90 days.

I agree with my colleagues. On the issue of you living abroad, you may want to move back to the USA soon and re-establish your residency.

How many passport photos should I send to USCIS when applying for adjustment of status?

Are you also filing for I-130 or is it based on an approved I-130? Normally 2 for you is enough and 6 for him.

Will I be issued 2 year conditional green card or 10 year unconditional green card?

If your interview at the consulate is passed the 2 year, you will get a 10 year green card after your immigrant visa is approved.

Should I get a new F-1 Visa after COS F-1 to F-2 and back to F-1?

When you applied to go back to F-1, did it get approved? Your question is not clear. If you have a second F-1 with school B I-20, you are fine to...

Hello? USA embassy asked me for joint sponsor even my husband income above 25k for annual. He lives in california.

Perhaps your husband did not provide enough documentation regarding income.

My wife filed I130 on 4/21/2017 and we received receipt but case is still pending till date 07/12/2018?

If your wife is now a US Citizen, you are considered immediate relative and that is fine if your status runs. HOWEVER, you should call and make an...