Year 11 Revision Week 6 Quiz 1

What colour is phenol phthalein in alkaline solution?

• red

• pink

• colourless

• yellow

• green

What is the reaction called between an acid and alkali

• Neutralisation

• Combustion

• Redox reaction

• Decomposition

What salt would be made if you mixed hydrochloric acid with sodium hydroxide?

• sodium ethanoate

• sodium chloride

• magnesium nitrate

• sodium hydrochloride

Which of the following statement is wrong about methyl orange indicator?

• Methyl orange shows red colour with the presence of acid.

• Methyl orange show orange colour if neutral.

• Methyl orange shows yellow colour with the presence of alkalis.

• All answer are correct.

A substance that is pH 14 is

• a strong alkali

• a strong acid

• neutral

• a weak alkali