Chemistry
Grade-10
Easy
Question
Universal indicator solutions are usually green to begin with. What does this mean?
- It is acidic
- It is alkaline
- It is neutral
- It is weak
Hint:
Neutral is green.
The correct answer is: It is neutral
A universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions.
pH range description colour:
< 3 Strong acid Red
3–6. Weak acid Orange
7 Neutral Green
8–11 Weak base Blue
> 11 Strong base Violet
Related Questions to study
Chemistry
__________ is an acid-base indicator and turns red when acid is added to it.
__________ is an acid-base indicator and turns red when acid is added to it.
ChemistryGrade-10
Chemistry
The incorrect statement among the following is
The incorrect statement among the following is
ChemistryGrade-10
Chemistry
A blue litmus paper dipped inside the solution of calcium hydroxide. What would be the change observed here?
  |
A blue litmus paper dipped inside the solution of calcium hydroxide. What would be the change observed here?
|
|
ChemistryGrade-10
Chemistry
Which of the given substances do not act as an indicator?
Which of the given substances do not act as an indicator?
ChemistryGrade-10
Chemistry
A sample of substance added to sodium hydroxide. The resultant solution, when mixed with vanilla essence, loses its smell. Identify the given sample from the following?
A sample of substance added to sodium hydroxide. The resultant solution, when mixed with vanilla essence, loses its smell. Identify the given sample from the following?
ChemistryGrade-10
Chemistry
Among the following the solution that is more acidic than the lemon juice is
Among the following the solution that is more acidic than the lemon juice is
ChemistryGrade-10
Chemistry
Identify the synthetic indicator from the following.
Identify the synthetic indicator from the following.
ChemistryGrade-10
Chemistry
The pH of all acids will be between:
The pH of all acids will be between:
ChemistryGrade-10
Chemistry
The pH scale measures
The pH scale measures
ChemistryGrade-10
Chemistry
Which of the following is used as olfactory indicators?
Which of the following is used as olfactory indicators?
ChemistryGrade-10
Chemistry
Battery acid is
Battery acid is
ChemistryGrade-10
Chemistry
Complete the following analogy: Turmeric : Bright yellow :: ______: Colorless
Complete the following analogy: Turmeric : Bright yellow :: ______: Colorless
ChemistryGrade-10
Chemistry
Which of the following has the highest pH value?
Which of the following has the highest pH value?
ChemistryGrade-10
Chemistry
Rahul experimented, as shown in the following figure. He took some solutions and added phenolphthalein indicators to them. Identify the X, Y and Z in this experiment.
Rahul experimented, as shown in the following figure. He took some solutions and added phenolphthalein indicators to them. Identify the X, Y and Z in this experiment.
ChemistryGrade-10
Chemistry
Milk of magnesia turns
Milk of magnesia turns
ChemistryGrade-10
