Mercury thermometer is commonly used for low temperature measurement. The freezing point and boiling point of mercury are respectively _____________ °C?
Options:
A .  â€“ 39 and 350
B .  â€“ 51 and 439
C .  â€“ 79 and 395
D .  â€“ 10 and 425
Answer: Option A NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
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