state gov Bihar Vidhan Parishad Assistant & DEO Mock Test 2023 General Science Chemistry Basic Concepts of Chemistry
Which of the following statements about universal indicator is/are true ?
1. It is a mixture of several indicators.
2. It shows different colours at different concentrations of hydrogen ions in solution.
3. It helps to determine the strength of given acid and base in titration.
Select the correct answer using the code given below :
1
1 only
2
1 and 2 only
3
2 and 3 only
4
1, 2 and 3