Litmus Paper Reactions and Properties

The video tutorial explores the effects of litmus paper on acids and bases. It begins with an introduction to litmus paper, followed by experiments using blue and red litmus papers. The blue litmus paper turns red in acid and remains unchanged in base, while the red litmus paper remains unchanged in acid and turns blue in base.

What happens to blue litmus paper when it is placed in an acidic solution?

• It turns green.

• It remains unchanged.

• It turns blue.

• It turns red.

When blue litmus paper is dipped into a basic solution, what is the observed change?

• It turns red.

• It turns blue.

• It remains unchanged.

• It turns yellow.

What is the effect on red litmus paper when it is introduced to an acidic solution?

• It turns yellow.

• It remains unchanged.

• It turns red.

• It turns blue.

How does red litmus paper react when placed in a basic solution?

• It remains unchanged.

• It turns blue.

• It turns green.

• It turns red.

Which of the following statements is true about the reaction of litmus paper with solutions?

• Red litmus paper turns blue in an acid.

• Blue litmus paper remains unchanged in a base.

• Red litmus paper remains unchanged in a base.

• Blue litmus paper turns red in a base.