alleryStart learning →Salt is dissolved in water and the water is then allowed to evaporate. What is left behind?
AA new gas
BSugar crystals
CA new acid
DSolid salt
Answer & Solution
Correct answer: D. Solid salt
Dissolving is a physical change, so evaporating the water leaves the original salt behind.
Keep practising Physical and chemical changes
Browse all Physical and chemical changes questions for Olympiad (Class 7), or explore more Science topics.
Related questions
A change in colour during a process most reliably suggestsCopper turns green after long exposure to damp air. This shows copper hasWhich pair correctly matches the change with its type?Baking soda is added to vinegar and bubbles of gas appear. This showsWhich of these is a physical change?A chemical reaction changes the atoms of a substance byRusting is specifically the corrosion of which metal?Stainless steel resists rusting because it forms a thin layer of