Question

three liquids are given to you by your teacher and forgot to label that which liquid is acidic , basic and neutral you are provided with only red litmus paper how will you check the nature of liquids​

Answer 1

Answer:

Ncert solutions

Grade 7

Mathematics

Science

Chapters in NCERT Solutions - Science , Class 7

Exercises in Acids, Bases and Salts

Question 9

Q9)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.

Solution 9:

Turmeric indicator is yellow in colour.

→ Take a few drops from each solution and test it with a turmeric solution. If the solution turns pink then the solution is basic i.e., sodium hydroxide. Mark the beaker(containing solution) as base.

→ Take a test tube and add a few drops of base solution and the second solution. Check if the test tube becomes warm and then add turmeric solution to it. If the colour does not change, it means the solution is acidic i.e., hydrochloric acid. The test tube becomes warm because of the neutralization effect.

→ If the test tube of the above solution does not become warm and it does show pink colour when turmeric solution is added, the second solution is neutral.

Explanation:

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