Question

1. Which of the following is acidic in nature?
(a) NaOH (b) KOH (c) Ag2O (d) SO2
2. What is the chemical name of rust?
(a) Hydrated ferric oxide (b) Hydrated ferrous oxide (c) Ferric oxide (d) Ferrous oxide
3.Explain the process of rusting
4. What is the reaction of magnesium with oxygen?
5. Non-metallic oxides are acidic in nature. How will you test this fact?

Answer 1

1. c

2.c

3.if we kept an iron metal in sun we can observe the brown layer is formed that is called rust

4.Mg+o2⇄mgo2

5.by using litmus paper if the litmus paper turns from blue to red