Question

at what temperature is water most dense? 95 degrees celsius, 4 degrees celsius, 50 degrees celsius, 20 degrees celsius

Explanation:

Water has an anomalous property where its density is maximum at 4 degrees Celsius. As temperature changes from 0°C to 4°C, water contracts and becomes denser; above 4°C, it expands with increasing temperature, becoming less dense. So among the options, 4 degrees Celsius is when water is most dense.

Answer:

B. 4 degrees Celsius (assuming the second option is labeled B; if the original labels are different, adjust the identifier. But based on the content, the correct option is the one with "4 degrees Celsius")