Acids Bases and Indicators

What is the colour of litmus in an acid ?

• Pink

• Yellow

• Red

• Colourless

What is the colour of litmus in a base ?

• Pink

• Blue

• Red

• Colourless

What is the colour of phenolphthalein in a base ?

• Pink

• Blue

• Red

• Colourless

Which of the following pH is strongly acidic?

• 5.0

• 14

• 9.5

• 1.0

Which has a pH below 7?

• Acid
• Base

Which has a bitter taste?

• Base
• Acid
• flagella
• cila

Which has a slippery texture?

• Acid
• Base

Turns litmus red

• Acids
• Bases
• All

What pH is the strongest base?

• 1

• 7

• 4

• 14

Which of the following is most likely to be basic:

• Lemon juice
• Vinegar
• Laundry detergent
• Coke