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Q100
(NDA-I/2024)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Official Key
Which one among the following statements with reference to the properties of water is not correct ?
Result
Your answer:
—
·
Correct:
B
Explanation
Option B is the incorrect statement because the latent heat of fusion of water is actually very high (approximately 334 J/g or 80 cal/g), not low. This property ensures that ice melts slowly, which is crucial for regulating global temperatures and preventing rapid flooding in glacial regions.
- Specific Heat: Water has an abnormally high specific heat capacity, meaning it can absorb or release large amounts of heat with minimal change in its own temperature.
- Density: Water is most dense at 4°C. Due to hydrogen bonding, ice forms a crystalline lattice that is less dense than liquid water, which is why ice floats.
- Conductivity: Pure water is a poor conductor of electricity because it lacks dissolved ions. Electricity is conducted in water only when impurities like salts or minerals are present to provide mobile charge carriers.
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