Welcome to the Quiz!
This quiz contains 4 questions from a mix of 1 subtopics.
What is the primary purpose of this practical lesson?
to determine the exact percentage by volume of nitrogen in air using iron.
to determine the approximate percentage by volume of nitrogen in air using iron.
to determine the approximate percentage by volume of oxygen in air using iron.
to determine the exact percentage by volume of oxygen in air using iron.
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What are the main gases present in the air?
nitrogen and carbon monoxide
oxygen and helium
oxygen and nitrogen
argon and carbon helium
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What is the chemical property of iron used in this practical?
iron reacts with nitrogen to form iron nitrate.
iron reacts with oxygen to form iron oxide.
iron reacts with argon to form iron aragonite.
iron reacts with carbon dioxide to form iron carbonate.
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What is the purpose of leaving the setup for a few weeks in the practical with iron?
to allow the water in the burette to evaporate.
to allow the iron filings to settle at the bottom.
to allow the water in the burette to freeze.
to allow the iron filings to react with the oxygen.
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