The mercury in a thermometer rises when it is placed in hot water because ______.

the atmospheric air is warm

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the liquid is boiling

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it loses heat to the water and contracts

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it gains heat from the hot water and expands

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Solution

The correct option is D it gains heat from the hot water and expands
A mercury thermometer is a glass tube filled with mercury. It works on the principle of thermal expansion.
When the thermometer is placed in hot water, the mercury gains heat from hot water and expands to a greater volume.

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The mercury in a thermometer rises when it is placed in hot water because ______.

The correct option is D it gains heat from the hot water and expandsA mercury thermometer is a glass tube filled with mercury. It works on the principle of thermal expansion. When the thermometer is placed in hot water, the mercury gains heat from hot water and expands to a greater volume.

The correct option is D it gains heat from the hot water and expands
A mercury thermometer is a glass tube filled with mercury. It works on the principle of thermal expansion.
When the thermometer is placed in hot water, the mercury gains heat from hot water and expands to a greater volume.