NCERT Solution
Class 7
Science
Acids, Bases and Salts
three liquids are given to you one is hydrochlori...

Question:
Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.

Answer:

Turmeric indicator is of yellow colour, we can identify them by putting one drop of each solution to the turmeric indicator. If the liquid drop changes into red colour, then it must be a basic solution that is sodium hydroxide. If the drop will not change the colour of the turmeric indicator, then it must be an acid, that is hydrochloric acid.

Sugar solution changes the colour of turmeric indicator to red because the mixture of basic and neutral solution is basic in nature.

Turmeric indicator + Sodium hydroxide → Colour change (yellow to red)

Turmeric indicator + Hydrochloric acid (HCL) → No colour change

Turmeric indicator + Sugar solution → Colour change (yellow to red)

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Question:
Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.

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Question: Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.

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Question:
Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.