Chetna...don't worry about who's wings you are wearing.....its only an indication of whether you are paying them, or they are paying you......Wings are like underpants...easily exchanged.
As for work experience...not telling us the basic location of where you live, makes it very hard to reccomend companies to approach.
and duties on work experience.........
Flying School. Answering the phone, Photocopying, Vacumming, cleaning windows, putting aeroplanes to bed, updating regs, pushing aeroplanes, depending on you own existing training level, refueling. They might take you for a fly!
Maintenance Facility. Forget doing this in an airline based place, it'll be as boring as bat****, as they are focused on OH&S...lord help them if you drop a spanner on your toe! Find a place that does GA...the types you are likely to learn on. Yes they will be over your shoulder, but you will see and learn so much about the planes you will train on. It's amazing what you will see...
Tasks...sweeping the hangar, cleaning aeroplanes, cowl and inspection panel removal...lots of things, depending on your apptitude (the foreman will pick up on that very quickly) Chances are you will get to fly more than once.
Cut this one right, and you might even get a job in your spare time...hands on and paid to play with a plane..........
Enjoy.
Jas