_ litmus paper turns into _ when it was dipped in carboxylic acid

Blue to red

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Red to blue

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No colour change

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None of these

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Solution

The correct option is A Blue to red
The carboxylic acid turns blue litmus into red. The hydroxyl group in COOH is more acidic than OH group prasent.
Hence option A is correct.

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Similar questions

Q. Read the following statements:
I. When a red litmus paper is dipped into reaction mixture of a saponification reaction, it turns blue and the reaction is exothermic.
II. When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is exothermic.
III. When a red litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.
IV. When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.
Which of the above statements are correct?

Read the following statements

(i) When a red litmus paper is dipped into reaction mixture of a saponification reaction, it turns blue and the reaction is exothermic.

(ii) When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is exothermic

(iii) When a red litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.

(iv) When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.

Which of the above statements are correct

When a red litmus paper is dipped in the aqueous solution of $X$ there is no change in colour.
When a blue litmus paper is dipped in the same solution it turns red.
Which among the following options can be the chemical $X$ ?

When blue litmus paper was dipped into the water, the colour of litmus paper remained the same. Similarly, when red litmus paper was dipped into water, the colour remained the same. By above observation we can concluded that:

Q. A blue litmus paper was first dipped in dilute

H C l

and then in dilute

N a O H

solution. It was observed that the colour of the litmus paper ___________.

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_____ litmus paper turns into _____ when it was dipped in carboxylic acid

The correct option is A Blue to redThe carboxylic acid turns blue litmus into red. The hydroxyl group in COOH is more acidic than OH group prasent.Hence option A is correct.

_ litmus paper turns into _ when it was dipped in carboxylic acid

The correct option is A Blue to red
The carboxylic acid turns blue litmus into red. The hydroxyl group in COOH is more acidic than OH group prasent.
Hence option A is correct.