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Which of the following is not a pure substance?
- a)Mercury
- b)Distilled water
- c)Nitric acid
- d)Tap water
Correct answer is 'D'. Can you explain this answer?
Verified Answer
Which of the following is not a pure substance?a)Mercuryb)Distilled wa...
Tap water is not a pure substance because it is mixed with chemicals that purify it and if it was from the ground it has naturally occurring minerals mixed in it.
Most Upvoted Answer
Which of the following is not a pure substance?a)Mercuryb)Distilled wa...
Introduction:
In chemistry, pure substances are defined as substances that are made up of a single type of molecule or atom. They have a fixed chemical composition and characteristic physical properties. Examples of pure substances include elements and compounds.
Explanation:
a) Mercury - Mercury is a chemical element and is a pure substance because it contains only one type of atom.
b) Distilled water - Distilled water is a compound made up of two types of atoms, hydrogen, and oxygen. However, it is still considered a pure substance because it has a fixed chemical composition and characteristic physical properties.
c) Nitric acid - Nitric acid is a compound made up of nitrogen, oxygen, and hydrogen. Like distilled water, it is still considered a pure substance because it has a fixed chemical composition and characteristic physical properties.
d) Tap water - Tap water is not a pure substance because it contains various dissolved minerals and impurities. These impurities can vary depending on the source of the tap water and can affect its chemical composition and physical properties.
Conclusion:
In summary, tap water is not a pure substance because it contains various dissolved minerals and impurities. The other options, mercury, distilled water, and nitric acid, are considered pure substances because they have a fixed chemical composition and characteristic physical properties.
In chemistry, pure substances are defined as substances that are made up of a single type of molecule or atom. They have a fixed chemical composition and characteristic physical properties. Examples of pure substances include elements and compounds.
Explanation:
a) Mercury - Mercury is a chemical element and is a pure substance because it contains only one type of atom.
b) Distilled water - Distilled water is a compound made up of two types of atoms, hydrogen, and oxygen. However, it is still considered a pure substance because it has a fixed chemical composition and characteristic physical properties.
c) Nitric acid - Nitric acid is a compound made up of nitrogen, oxygen, and hydrogen. Like distilled water, it is still considered a pure substance because it has a fixed chemical composition and characteristic physical properties.
d) Tap water - Tap water is not a pure substance because it contains various dissolved minerals and impurities. These impurities can vary depending on the source of the tap water and can affect its chemical composition and physical properties.
Conclusion:
In summary, tap water is not a pure substance because it contains various dissolved minerals and impurities. The other options, mercury, distilled water, and nitric acid, are considered pure substances because they have a fixed chemical composition and characteristic physical properties.
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Which of the following is not a pure substance?a)Mercuryb)Distilled wa...
Tap water have many impurities in it.that is why tap water is not a pure subsrance.
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Which of the following is not a pure substance?a)Mercuryb)Distilled waterc)Nitric acidd)Tap waterCorrect answer is 'D'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Which of the following is not a pure substance?a)Mercuryb)Distilled waterc)Nitric acidd)Tap waterCorrect answer is 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is not a pure substance?a)Mercuryb)Distilled waterc)Nitric acidd)Tap waterCorrect answer is 'D'. Can you explain this answer?.
Which of the following is not a pure substance?a)Mercuryb)Distilled waterc)Nitric acidd)Tap waterCorrect answer is 'D'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Which of the following is not a pure substance?a)Mercuryb)Distilled waterc)Nitric acidd)Tap waterCorrect answer is 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is not a pure substance?a)Mercuryb)Distilled waterc)Nitric acidd)Tap waterCorrect answer is 'D'. Can you explain this answer?.
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