P Q
Two containers P and Q are filled with seawater and distilled water respectively. Which of the following will be the observation, when both P and Q are exposed to air and sunlight for a long time?

Q contains salt.

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P contains salt.

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Both P and Q are empty.

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Only P is empty.

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Solution

The correct option is B P contains salt.
$∙$ Seawater contains disolved salts while distilled water is free from salt and other impurities.
$∙$ On exposure to air and sunlight, water evaporates away, leaving the salt crystals behind in beaker P. Hence, P contains salt.
$∙$ Q is filled with distilled water. Hence, on complete evaporation it becomes empty.

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P Q Two containers P and Q are filled with seawater and distilled water respectively. Which of the following will be the observation, when both P and Q are exposed to air and sunlight for a long time?

P Q
Two containers P and Q are filled with seawater and distilled water respectively. Which of the following will be the observation, when both P and Q are exposed to air and sunlight for a long time?