Question

Which of the following metallic oxide produce greenish yellow gas with conc.HCI
a) Manganese dioxide
b) Copper oxide
c) Aluminium Oxide
d) Zinc oxide​

Answer 1

Correct Option Is a)Manganese Dioxide

Answer:

Manganese dioxide when heated with conc. HCl gives a greenish-yellow gas. This gas produced is chlorine gas.

MnO

2

+4HCl

Heat

MnCl

2

+2H

2

O+Cl

2(g)

conc.

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