Question

Which of the following is denser than the density of water?
1. Iron nail
2. Ice
3. Cork
4. Thermocol

Answer 1

Correct Answer - Option 1 : Iron nail

The correct answer is Iron nail.

• The Density of the iron nail is greater than the density of water.
• The density of water is not really 1 g/ml, but rather a bit less at 0.9998395 g/ml at 4.0° Celsius (39.2° Fahrenheit).

• As water is warmed from the freezing point of 0 to 4 °C. It contracts and becomes denser. This initial increase in density takes place because at 0°C a portion of the water consists of open-structured molecular arrangements similar to those of ice crystals. 
• Ice is less dense than water. 
• The cork's density is 0.24 g/cm³, and the density of water is 1.00 g/cm³. So the cork will float.