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 15a. 550 ° C
b. 2000 ° C
c. 1000 ° C
d. 3000 ° C
ANSWER: 2000 ° C