What are trojan asteroids?
a.
asteroids that pass through the inner solar system and share jupiter’s orbit around the sun.
b.
asteroids that stay in the outer solar system and share jupiter’s orbit around the sun.
c.
asteroids that are always positioned within the inner solar system.
d.
none of these are correct.

Trojan asteroids are the asteroids that pass through the inner solar system and share Jupiter’s orbit around the sun.

Option A

Explanation:

Asteroids are the small rocky objects composed of minerals and dust particles which are present in space in indefinite orbits. Some of the asteroids share the orbits of the planet in a 60° angle with the planet. These kind of asteroids are termed as Trojan asteroids.

Mostly the Trojan asteroids share the orbit of the Jupiter with lagging behind the Jupiter with an angle of 60°. Recently, other planets also have found to have their Trojan asteroids. These asteroids are bigger than moon but smaller than the planet.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

i believe the answer is a hope it and is correct