Question

answer the following questions

1)does zinc make bulb to glow or not?
2)does the carbon make bulb to glow or not?
3)does lodine make bulb to glow or not?

8th class physics 4th lesson ​

Answer 1

Answer:

no

Explanation:

nitrogen is usually used for this purpose now

Answer 2

Answer:

unless the bulb is connected to a closed circuit it will not glow

Explanation:

1 .

Zinc is an active metal, which reacts readily with acid to liberate electrons. The acid's active ingredient is positively charged hydrogen, so a transfer of electrons takes place between the zinc and the acid. The zinc (Zn0) is oxidized (Zn++ ) and the acid (H+) is reduced to hydrogen gas (H2), which you can see bubbling out around the electrodes. The reaction at the penny electrode depletes the electrons from the copper and attaches them to the hydrogen ions in the phosphoric acid.

2.

The carbon-filament bulb was actually highly inefficient, but it banished the soot and fire hazards of coal-gas jets and thus soon gained wide acceptance

3.

halogen lamp is an incandescent lamp consisting of a tungsten filament sealed in a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen, such as iodine or bromine