Advertisements
Advertisements
Question
If a solution changes the colour of litmus from red to blue, what can you say about its pH?
Solution
The solution is basic in nature and the pH value will be more than 7.
APPEARS IN
RELATED QUESTIONS
State one advantage of using ‘Ph paper’ for measuring the Ph value of an unknown solution.
Define pH.
Define an indicator.
Solution P has a pH of 13, solution Q has a pH of 6, and a solution R has a pH of 2.
Which solution: Will liberate ammonia from ammonium sulphate on heating?
Mention the colour changes observed when the following indicator is added to acid: Methyl orange solution.
To increase the pH value of neutral solution, we should add
Write the approximate colour of the following sample with the universal indicator:
Distilled water
Complete the following table and write your observations.
| Hydrogen sulphide | Ammonia | Sulphur dioxide | Hydrogen chloride | |
| Shake the gas with red litmus solution |
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 non-metal, then the litmus will turn ______.
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 reactive metal, then ______ will be evolved when M reacts with dilute sulphuric acid.
