Question

Work out a process for separating a mixture of sand, nh4cl and common salt?

Answer 1

Heat the mixture then nh4cl will sublimate. Collect the vapours of nh4cl and cool it to get it back. Mix mixture of sand and salt in water. The salt will dissolve in it. The sand will remain undissolved. Filter out the sand with filter paper. Heat mixture of salt and water. The water will evaporate and salt will remain.