Question

Oxide of which of the following material will turn blue litmus to red?

a. Iron

b. Carbon

c. Aluminium

d. Zinc
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Answer 1

So, oxide solution of non-metals turns blue litmus to red. For example carbon is non-metal. Its oxide carbon-dioxide will form carbonic acid with water. The solution turns blue litmus paper red.

Answer 2

Answer:

its option b carbon because carbon is non metal