Question

A test tube containing some water is surrounded by melting ice (pure). Then, the water in the test tube will :

• A. not freeze into ice
• B. freeze into ice
• C. boil ultimately
• D. become steam ultimately

Answer 1

The correct option is A not freeze into ice

A test tube containing water which is surrounded by melting ice can't freeze into ice because first of all after some time both water and melting will be at $0^{o}C$. And while water is converted into ice it releases heat and there is nothing which can absorb latent heat of fusion which is released by freezing water.