Question

The following image shows the image of a lid which is used to close a vessel containing hot cooked rice. Identify the property which is undergoing a change and its cause.

• A. Change in state, condensation
• B. Change in smell, condensation
• C. Change in taste, solidification
• D. Change in colour, solidification

Answer 1

The correct option is A Change in state, condensation

Cooked rice contains some water in it. As cooked rice is very hot, water inside it converts into water vapour and comes out of it. When the vessel containing hot cooked rice is closed with a lid, the water vapour escaping out from the rice comes in contact with the lid which is relatively cooler. Due to this, water changes its state from gas to liquid and form droplets all around the lid. This process of conversion of water is called condensation and it involves change in state.