Answer in short?
Immersion rods for heating liquids are made up of metallic substances?
Metals are good conductor of heat and electricity so they warm up when electricity is passed through them and they are kept in liquid. So it also gets hot.
Question 2
Give reasons for the following:
(a) Aluminium foils are used to wrap food items.
(b) Immersion rods for heating liquids are made up of metallic substances.
Immersion rods for heating liquids are made up of metals. Give reason