Purna Chandra does not recognise the difference between solids and liquids. Prepare some questions, by which he can understand the differences between them.

State the differences between solid, liquid and gas.

Lokesh told to his teacher that he is not able to recognize the difference between evaporation and boiling. Then the teacher asked some questions and made him to understand the difference between them. What are the questions asked by teacher to Lokesh ?

Draw a block diagram to explain single and double circulation. Write differences between them.

Are the inspired air and expired air similar? If they are not, what are the differences between them ?

Sunlight and groundwater are both renewable resources. What is the difference between them?