Question

A sealed glass jar is full of water. When it is kept in a freezing mixture, it is broken because :

• A. water expands from $4^{o}C$ to $0^{o}C$
• B. ice expands while melting
• C. water expands due to freezing
• D. ice expands since its temperature falls below $0^{0}C$

Answer 1

Answer: (A)

water expands from $4^{o}C$ to $0^{o}C$

Anomalous expansion of water occurs when cooled from $4^0$C to $0^0$C.
Hence, the sealed glass jar will be broken.