Acid and Alkali

Lemon contains acid or alkali or neutral

• Acid

• Alkali

• Neutral

What colour does red litmus paper turn when added to an alkali?

• Blue

• Red

• Green

• Colourless

Alkali could also be known as

• Acid

• Weak acid

• Base

• Maze

True or False: Acids with a low pH and bases with a high pH are considered very dangerous.

• True

• False

Tags

NGSS.MS-PS1-2

Which of the following indicator will show different colour in acid, neutral and alkali?

• Phenolphtalein

• Universal indicator

• Methyl orange

• Litmus paper

The color of litmus in acid:

• Red

• Blue

• Purple

• Green

• Sodium sulphate

• Sodium chloride

• Sodium nitrate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-1

The technique used in neutralisation is called

• filtration.

• titration.

The other name of alkali is basic

• True

• False

Acid in soft drink:

• Hydrochloric acid

• Sulfuric acid

• Acetic acid

• Carbonic acid