Asked by  | 23rd Nov, 2008, 10:04: AM

Expert Answer:

We cannot entertain multiple question of this type, please post each question individually and let us know where you are getting stuck so that we would be able to explain things better.

1 .  Ammonia, water vapour , methane and hydrogen sulphide 

Answered by  | 23rd Nov, 2008, 11:27: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.