Beyond 2000 ° C gas vaporises and blackens the lamp in a gas filled lamp

Q.  Beyond what temperature does the gas vaporise and blackens the lamp in a gas filled lamp?
- Published on 05 Oct 15

a. 550 ° C
b. 2000 ° C
c. 1000 ° C
d. 3000 ° C

ANSWER: 2000 ° C

Post your comment / Share knowledge


Enter the code shown above:

(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)