Indicator is a substance which shows different colours in acidic and basic solutions.

True

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False

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Solution

The correct option is A
True

The statement is true.
Litmus (an indicator) when added to acidic solution, it changes to red and turns blue when added to basic solution.

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Q. Indicator is a substance which shows different colors in acidic and basic solutions.

Question 6 (iv)
Mark ‘T’ if the statement is true and ‘F’ if it is false:

(iv) Indicator is a substance which shows different colours in acidic and basic solutions.

Q. Name two substances that have different colours in acidic and basic solutions. What is the general name for such substances?

Mark ‘T’ if the statement is true and ‘F’ if it is false:

(i) Nitric acid turns red litmus blue. (T/F)

(ii) Sodium hydroxide turns blue litmus red. (T/F)

(iii) Sodium hydroxide and hydrochloric acid neutralise each other and form salt and water. (T/F)

(iv) Indicator is a substance which shows different colours in acidic and basic solutions. (T/F)

(v) Tooth decay is caused by the presence of a base. (T/F)

Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions respectively are

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Indicator is a substance which shows different colours in acidic and basic solutions.

The correct option is A True The statement is true. Litmus (an indicator) when added to acidic solution, it changes to red and turns blue when added to basic solution.

The correct option is A
True

The statement is true.
Litmus (an indicator) when added to acidic solution, it changes to red and turns blue when added to basic solution.