Rock salt contains a mixture of salt and sand. The procedure for separating the sand from the salt is given below. step 1 Break up the rock salt, add warm water and stir it. step 2 Pour the mixture through filter paper placed in a funnel. step 3 Let the water evaporate so that the salt crystallises. Which statement about the procedure is correct?
- AThe filtrate in step 2 is pure water.
- BThe residue in step 2 is pure crystals of salt.
- CThe solute is salt.
- DThe solvent is a mixture of salt and water.