just a point for every one:
a bulb is more fragile before it is fired ,maybe if you can Venki. you can fire them to try them out to confirmthat the bulbs are in working order.
the reason why is the filiment in the bulb is weak and after yuo fire them up it allows the material to be heated up and formed then that way its going to depend on the peoples wiring or ballasts and we can save all this before somone takes against it ..
and a full blow feast starts up
HTH
Mike.