pH indicator - Entry ticket

If a strip of red litmus paper stays red after dropping a drop of a solution on it, it means the solution is

• neutral

• alkaline

• acidic

• The red litmus paper has a problem

If two drops of methyl orange are dropped in a solution, and the solution turns yellow, it means that the solution's pH is...

• acidic

• neutral

• alkaline

• above 6.2

Phenolphtalein is a good indicator to tell if a solution...

• is acidic

• is alkaline

• is neutral

To measure the pH of a pink acidic solution, what indicator is best?

• universal indicator

• blue litmus paper

• phenolphatlein

• methyl orange

Which indicators are liquid?

• universal indicator and methyl orange

• phenolphtalein and methyl orange

• litmus and universal indicator

• litmus and phenolphtalein

According to the image, the substance tested is a...

• strong acid

• weak base

• strong base

• weak acid

According to the image, the substance tested is

• acidic

• alkaline

• neutral