Question

Give reason
a) Carbon can reduce zinc oxide to zinc but not calcium oxide to calcium.
b) Aluminium is a reactive metal yet it is used for packing food articles.
c) Alloys are used in electrical heating devices rather than pure metal.+
I need detailed explanation plsz

Answer 1

Explanation:

1. because carbon is less reactive than calcium
2. aluminium makes a Aluminium oxide which protects the food
3. because because the density of the alloy is more than the density of the other pure metals

Answer 2

a) because the reactivity of carbon is higher than zinc but lesser than calcium

b) because aluminium don't react with food article

c) because alloy have free electron which allows the current to pass through

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