Question

.answer both questions
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Answer 1

Mercury

Bcoz It is ductile and good conductor of heat.

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Answer 2

a.Mercury

b.Aluminium foils are used to wrap food items because aluminium being a soft malleable metal it can be beaten to in sheets to form thin wrapping sheets. Moreover it does not react with food items. Immersion rods are made of metallic substances metals are good conductors of heat and electricity.