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Question

When blue litmus paper is dipped into the water, the colour of litmus paper remains same. Similarly, when a red litmus paper is dipped into the water, the colour remains same. By the above observation, we can conclude that:


A

Water is acidic.

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B

Water is basic.

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C

Water is neither acidic nor basic.

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D

No conclusion can be made.

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Solution

The correct option is C

Water is neither acidic nor basic.


Litmus paper is a filter paper which has been treated with a natural water-soluble dye obtained from lichens. Litmus paper is the most recognized member of chemical indicators. Like most pH paper, litmus changes color when exposed to an acidic or alkaline solution. The simple pH scale ranges from 0-14 with 0 being the most acidic, 7 being neutral, and 14 being the most basic or alkaline. Litmus paper is commonly used in educational science classes.

The colour of the litmus paper does not change since water is neither acidic nor basic.Water has a pH value of 7 which is neutral.


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