0620/11 Chemistry May Jun 2023 Online Test | Cambridge IGCSE MCQ

Rock salt is a mixture of salt and sand.
The method used to separate the sand from the salt is listed.
step 1: Crush the rock salt, add to warm water and stir.
step 2: Pour the mixture through a filter paper held in a funnel.
step 3: Evaporate the water to crystallise the salt.
Which statement about the method is correct?