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प्रश्न
To increase the pH value of neutral solution, we should add
पर्याय
An acid
An acid salt
An alkali
A salt
उत्तर
An alkali
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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
You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Complete the table:
| Indicator | Neutral | Acidic | Alkaline |
| Litmus | Purple | ______ | ______ |
| Phenolphthalein | Colourless | ______ | ______ |
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 ______.
Two solutions A and B have pH values of 2 and 9 respectively which one of these two will give a pink colour with phenolphthalein indicator?
What is the pH of pure water?
Mention the colour changes observed when the following indicator is added to acid: Alkaline phenolphthalein solution.
Write the approximate colour of the following sample with the universal indicator: Acid rain
Complete the following table and write your observations.
| Hydrogen sulphide | Ammonia | Sulphur dioxide | Hydrogen chloride | |
| Shake the gas with red litmus solution |
Phenolphthalein and methyl Orange are ______.
