Science
mediumQ. No. 15117-what-is-the-freezing-point-of-mercury
What is the freezing point of Mercury?
Last Updated:
A0°C
B-39°C
C-114°C
D-273°C
Correct Answer: -39°CYour Answer: B
Explanation
The freezing point (solidification point) of mercury is critically important for understanding thermometer applications. Option A (0°C) is incorrect — 0°C is the freezing point of water, not mercury. Option B (-39°C) is CORRECT — Mercury freezes at -39°C. This means mercury thermometers cannot be used to measure temperatures below -39°C, because mercury will solidify and stop working. Option C (-114°C) is incorrect — -114°C is the freezing point of ethanol (alcohol), not mercury. Students often confuse mercury and alcohol freezing points. Alcohol freezes at -114°C while mercury freezes at -39°C. Option D (-273°C) is incorrect — -273.15°C (or 0 Kelvin) is absolute zero, the lowest theoretically possible temperature. This is not the freezing point of mercury. Alcohol: freezing -114°C, boiling 78°C.
Related Questions
View All15188-what-phenomenon-causes-a-pen-to-dry-out-and-how-does-putting-the-cap-on-prevent-itWhat phenomenon causes a pen to dry out and how does putting the...15187-why-do-biscuits-kept-in-a-refrigerator-without-a-cover-become-dry-and-crispyWhy do biscuits kept in a refrigerator without a cover become dry...15186-what-is-the-function-of-a-thermostat-in-a-refrigeratorWhat is the function of a thermostat in a refrigerator?
Test your Heat knowledge
Start Topic TestFAQ
Heat FAQs
Common questions and clear answers for this topic.
What is heat in physics?
Heat is a form of energy that transfers between objects or systems due to a temperature difference, moving from a hotter body to a cooler one until thermal equilibrium is reached.