Question

Water at $4^0$C is filled to the brim of 2 beakers. A boy performed an experiment A of heating and B of cooling. The observation was :

• A. water level in B went down and in A water flowed out
• B. water flowed out in both the cases
• C. water flowed out in B and water level went down in A
• D. water level went down in both cases

Answer 1

The correct option is B water flowed out in both the cases

Water has anomalous expansion from $4^0$C to $0^0$C.
Water expands when heated from $4^0$C onwards.
Since water expands in both the cases, it will overflow from both experiments A and B.