Question

What remains in the petri dish if a mixture of salt, sand and water is heated?

• A. Only sand
• B. Both sand and water
• C. Only salt
• D. Both salt and sand

Answer 1

The correct option is D

Both salt and sand

When the mixture of salt, sand, and water is heated for a long time, water evaporates from the mixture in the form of water vapour. Salt and sand will be left behind.