imp. ques.

Asked by aayushverma | 23rd Jul, 2008, 05:12: PM

Expert Answer:

Filment of a bulb is not isolated. It is enclosed in a glass chamber / bulb . If a light bulb envelope leaks, the hot tungsten filament reacts with the air, yielding an aerosol of brown tungsten nitride, brown tungsten dioxide, violet-blue tungsten pentoxide  and yellow tungsten trioxide which then deposits on the nearby surfaces or the bulb interior.

Answered by  | 29th Jul, 2008, 06:01: AM

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