Question

You are planning to go on a very cold place at night the temp drops -50 degrees which thermometer will you take with you mercury or alcohol why

Answer 1

alchohol..Image result for alcohol thermometer uses

Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (-94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used.