What is the effect of potassium hydroxide solution on litmus paper?

Turns blue litmus to red

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Turns red litmus to blue

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Turns red litmus to green

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Turns blue litmus to green

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Solution

The correct option is B Turns red litmus to blue
Litmus paper is an indicator which is used to test if a substance is acidic or basic in nature. Acid turns blue litmus paper red and base turns red litmus paper blue.
Potassium hydroxide $(KOH)$ is a base. Therefore, it turns red litmus paper blue.

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Similar questions

A Drop of colourless liquid was placed on blue litmus paper. The litmus paper turned red. The liquid could be :
(1) dilute hydrochloric acid
(2) dilute sodium hydroxide solution
(3) distilled water
(4) sodium bicarbonate solution

Four students A, B, C and D were studying the effect of the solutions of hydrochloric acid, sodium hydroxide, sodium chloride and pure water respectively on blue litmus solution. Which of the students observed the colour change of blue litmus solution to red?
(1) A
(2) B
(3) C
(4) D

Q. What is the effect of potassium hydroxide solution on litmus paper?

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What is the effect of potassium hydroxide solution on litmus paper?

The correct option is B Turns red litmus to blueLitmus paper is an indicator which is used to test if a substance is acidic or basic in nature. Acid turns blue litmus paper red and base turns red litmus paper blue. Potassium hydroxide (KOH) is a base. Therefore, it turns red litmus paper blue.

The correct option is B Turns red litmus to blue
Litmus paper is an indicator which is used to test if a substance is acidic or basic in nature. Acid turns blue litmus paper red and base turns red litmus paper blue.
Potassium hydroxide $(KOH)$ is a base. Therefore, it turns red litmus paper blue.