Chemistry 0620 · IGCSE · The characteristic properties of acids and bases

The characteristic properties of acids and bases — practice question

Four separate solutions are each checked using blue litmus and methyl orange. It is already known that every solution is either acidic or alkaline. The outcomes are given below. Solution 1: blue litmus - red; methyl orange - red Solution 2: blue litmus - red; methyl orange - yellow Solution 3: blue litmus - blue; methyl orange - yellow Solution 4: blue litmus - blue; methyl orange - yellow Which statement is correct?

  • ASolutions 1 and 4 are acidic.
  • BSolutions 1 and 2 are alkaline.
  • CSolutions 3 and 4 are acidic.
  • DSolutions 3 and 4 are alkaline.

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