Chemistry, asked by adiptopurakayastha, 7 months ago

In which of the following experiment, residue left behind is reddish brown.
a) Heating of copper powder in air
b) Heating of ferrous sulphate crystals
c) Heating of magnesium in air
d) Heating of solid calcium carbonate

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Answered by aadilroy

3

Answer:

heating of copper powder in air

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