Indicators

Which of the following substance contains Acid?

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Ammonia turns Red litmus to blue, It is________

• Acidic

• Neutral

• Basic

• None of the above

A solution which does not change the colour of any indicator is considered to be _______

A turmeric stain on your shirt turns red on washing with soap and water. Write the reason for this change.

What is Litmus? Explain how does it help in identifying the chemical nature of a substance?

What will happen if China rose is dipped in the given two solutions.

Identify the Synthetic Indicator among the following.

• Turmeric

• China Rose

• Phenolphthalein

• Grape juice

Identify the nature of the solution in the given picture. Also write the name of the indicator used.