Question

why is an incandescent bulb made oxygen free​

Answer 1

Answer:

Argon, rather than oxygen, is used in light bulbs, because it helps maintain the inert atmosphere needed for an igniting, illuminating tungsten filament to function safely. It also excludes oxygen, which would corrode the heated filament on contact.

Answer 2

Answer:

The central location of India at the head of the Indian Ocean is considered of great significance. Why? Answer: The trans-Indian Ocean routes which connect the countries of Europe in the West and the countries of East Asia provide a strategic central location to India.