Which of the following is a physical property of benzene?
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A.
It reacts vigorously with water
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B.
It is a colourless liquid with a sweet odour
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C.
It is highly reactive due to the presence of double bonds
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D.
It is denser than water
Correct Answer:
B. It is a colourless liquid with a sweet odour
Explanation:
Benzene is characterized as a colorless liquid with a pleasant, sweet aroma at room temperature, which is a classic example of a physical property because it can be observed without changing the substance's chemical identity. In contrast, its reactivity with water or the nature of its chemical bonds are chemical properties, and its actual density is lower than that of water, causing it to float rather than sink. Therefore, its appearance and distinct smell correctly identify its physical state and characteristics.
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