Question

3. Describe an experiment to show chemical effect of electric current.
4. Draw a labelled diagram and methods to show how you could nickel-plate a spoon.​

Answer 1

Answer:

3) Step by Step:

STEP 1- Take two iron nails.

STEP 2- Clean it with sand paper.

STEP 3- Wrap copper wire around both the nails. And connect the other end to the battery terminal.

STEP 4- Take water in beaker and little amount of salt in it or a few drpos of sulphuric acid in it.

STEP 5- Immerse the nails in the solution.

STEP 6- Observe the nails carefully. You can see bubbles of gases coming out from water near nails.

When, electeric current is passed through water gases like hydrogen and oxygen are evolved.

Hope it is helpful !!!

Answer 2

Answer:

Answer 3.

STEP 1- Take two iron nails. ... STEP 6- Observe the nails carefully. You can see bubbles of gases coming out from water near nails. When, electeric current is passed through water gases like hydrogen and oxygen are evolved.

Answer 4.