SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?
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Compound
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Element
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Mixture
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None of the Above
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Explanation:
Detailed explanation-1: -During boiling the water gets completely evaporated leaving salt without change in its composition. This shows that NaCl is a compound because there was no change in its composition and concentration and it dissociated easily.
Detailed explanation-2: -A compound is a substance composed of two or more different elements chemically bonded together in a fixed ratio. Saltwater does not fit this definition as it is a mixture of two substances, not a chemical compound.
Detailed explanation-3: -Since the proportion of the salt and the water is not fixed, we classify salt water as a mixture.
There is 1 question to complete.