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प्रश्न
State three applications of pH scale.
उत्तर
The three applications of pH scale are:
- It is used to determine the acidic or basic nature of the solution.
- It is used to determine hydronium ion concentration present in the solution.
- It is used to find out neutrality of the solution.
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संबंधित प्रश्न
Choose the correct answer from the options given below
To increase the pH value of a neutral solution, we should add:
1) an acid
2) an acid salt
3) an alkali
4) a salt
What would you observe when red litmus paper is introduced into a solution of ammonia in water?
M is an element in the form of a powder. M burns in oxygen and the product obtained is soluble in water. The solution is tested with litmus. Write down only the word which will correctly complete the following sentence.
If M is a metal, then the litmus will turn ______.
Define an indicator.
What is observed when neutral litmus solution is added to sodium hydrogen carbonate solution?
Write the approximate colour of the following sample with the universal indicator: Gastric juice
When you use universal indicator, you see that solutions of different acids produce different colours. Indeed, solution of the same acid with different concentrations will also give different colours. Why?
Describe the tests used to determine acids and bases.
The indicator that changes to pink colour in an alkaline solution is ______.
A compound P is heated in a test tube with sodium hydroxide solution. A red litmus paper held at the mouth of the test tube turns blue.
Which of the following could compound P be?
