CBSE Class 7 FAQs

for cbse we will advice you to use NCERT

Take a beaker filled with water and add a few drops of dilute suphuric acid.

Heat the water.

During this process stir continuously.

Continue adding copper sulphate powder till no more powder can be dissolved.

Filter the solution.

Leave it for cooling.

The crystals will separate out.

Flexible as per student's convenience

central circular region formed by cyclone is called eye of cyclone. it is comparatively calm area . and diameter can vary from 10km -30km.

when the forest is having multiple species of trees it is called mixed forest

Distilled water is pure water it doesn't  contain any ions . Ions are very essential to conduct electricity . therefore it doesn't conducts electricity

Yes