Question

Explain the following Process/Events :
1. Put two to three iron nails in the blue solution of copper sulphate and 15 to 20 minutes the colour of the solution turns green.

2. Give the basic difference between whether and climate.

3. The red litmus paper turn blue when it is dipped into the solution of magnesium oxide with water.

Please give the answer.​

Answer 1

Answer:

3 because magnesium oxide is acid