Answers

2015-04-29T16:57:01+05:30
Because iron is a metal and not a gas
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2015-04-29T19:18:03+05:30
Noble gas is inert gas! Iron is chemical symbol is fe! it is metal!inert gas does not do chemical reaction with other gas! Bulb has argon gas which does not chemical react with tonguston when it got heated!
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