Question

we always see white fumes in clear sky from the back of a rocket . What is its composition​

Answer 1

Explanation:

Contrails are formed when vapor from the engines freezes

The trails left behind by planes are officially called contrails, short for concentration trails. They form a bit similarly to how the breath you exhale can condense into vapor on a cold day.Jun 27, 2016

Answer 2

Jets leave white trails, or contrails, in their wakes for the same reason you can sometimes see your breath. ... Jet engine exhaust contains carbon dioxide, oxides of sulfur and nitrogen, unburned fuel, soot and metal particles, as well as water vapor. The soot provides condensation sites for the water vapor.

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