Question

State whether the following statements are true or false. Correct the false statements.

Phenolphthalein is a natural indicator.

• A. True
• B. False

Answer 1

The correct option is B False

Natural indicators

• Natural indicators are naturally found substances that indicate whether a substance is acidic, basic, or neutral.
• Examples: Red cabbage, turmeric solution, etc.

Synthetic indicators

• Synthetic indicators are synthetically synthesized(produced in labs) substances that indicate whether a substance is acidic, basic, or neutral.
• Examples: Phenolphthalein, methyl orange, etc.

Phenolphthalein:

• Phenolphthalein is a synthetically synthesized compound.
• Therefore it is not a natural indicator.
• Phenolphthalein is a synthetic indicator.

Hence the given statement is false.