1.
Divya kept some wet blue litmus papers in the sun to dry. The rain began to fall suddenly. She was surprised to find no blue litmus papers. They were red. What might have happened there?
2.
According to Divya, rainwater is neither acidic nor basic. However, she noticed that it alters the colour of litmus paper. It has been determined that there is no acid rain. What changed the property of rainwater?