Select the substances that are mixtures from the following: (a) Iron (b) Coal…
2024
Select the substances that are mixtures from the following:
(a) Iron
(b) Coal
(c) Sea water
(d) Hydrogen chloride (HCl)
- A.
(c) only
- B.
(a), (b), (c), and (d)
- C.
(a), (c), and (d) only
- D.
(b) and (c) only
Attempted by 161 students.
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Correct answer: D
Correct answer: (b) and (c) only
Iron is an element, so it is not a mixture.
Coal is a mixture because it contains carbon along with other substances.
Sea water is a mixture of water and dissolved salts.
Hydrogen chloride (HCl) is a compound in this clarified wording, so it is not counted as a mixture here.