Litmus papers

Litmus papers

Fill in the Blank

Blue and red litmus papers do not change colour in substance X.

Is substance X acidic, neutral or alkaline?

Multiple Choice

Blue litmus paper and red litmus paper do not change colour in substance X.

Which of the following might be substance X?

• lime juice

• salt

• detergent

Fill in the Blank

Red litmus paper turns blue in substance Y.

Is substance Y acidic, neutral or alkaline?

Multiple Choice

Red litmus paper turns blue in substance Y.

Which of the following might be substance Y?

• soap water

• water

• lime juice

Fill in the Blank

Blue litmus paper turns red in substance Z.

Is substance Z acidic, neutral or alkaline?

Multiple Choice

Blue litmus paper turns red in substance Z.

Which of the following might be substance Z?

• shampoo

• water

• vinegar