Noble gas as in other metallurgical processes and in the production of silicon for the semiconductor industry. Noble gases are commonly used in lighting because of their lack of chemical reactivity. Argon, mixed with nitrogen, is used as a filler gas for incandescent light bulbs. Krypton is used in high-performance light bulbs, which have higher color temperatures and greater efficiency, because it reduces the rate of evaporation of the filament more than argon; halogen lamps, in particular, use krypton mixed with small amounts of compounds of iodine or bromine. The noble gases glow in distinctive colors when used inside gas-discharge lamps, such
Phase-out of incandescent light bulbs the results of interim assessment from October 2015 to October 2016. It has been reported that the ban would be complete by October 2016. While not a complete ban, the UJALA plan in India sought to replace 770 million incandescent light bulbs with LED bulbs by 2019. This was expected to reduce energy consumption by over 100 billion kWh annually and reduce annual electricity bills by . As of April 2017, 229 million LED bulbs had been distributed across the country. The states of Tamil Nadu , Kerala and Karnataka in India have banned the use of incandescent bulbs in