it becomes straight
Knitting arranged yarn into complex shapes rather than straight lines. The shapes can deform, which would not happen if the yarn was linear.
Kirby's Epic Yarn happened in 2010.
The iron bar would become more magnetic.
The iron would bubble and flammable gas would be released
You would develop iron defficency
Nothing.
Rust and be heavy.
You would burn and feel immense pain. Liquid iron is very hot.
note when we yarn our lungs contract this is proven because our chest move inward as air is release.
your molecules would get bigger since it wouldn't be weighed down by the iron and you would explode into a million pieces
it spontaneously combusted
you would die