Question

Substance X is placed in a container with substance Y. Both substances are fluids. Substance X initially sinks to the bottom of the container. After five minutes of being heated on a hot plate, substance X becomes less dense than substance Y. What will most likely happen next?

A. Substance X will rise due to convection.
B. Substance Y will rise due to convection.
C. Substance X will rise due to radiation.
D. Substance Y will rise due to radiation.

Answer 1

On E2020 it is A. substance X will rise due to convection. 


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Answer 2

Answer: Option (A) is the correct answer.

Explanation:

Convection is a process in which heat transfers from a hotter substance to a colder substance.

As a result, the substance which is less dense will rise and the more denser substance will sink due to the influence of gravity.

Thus, we can conclude that in the given situation substance X will rise due to convection.