Question detail
In Test for oxygen, which answer best matches the evidence for oxygen gas?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Identification of common gases
Question
- A. To ensure it can burn
- B. To indicate the presence of carbon dioxide
- C. To show that it is dry
- D. To ensure it can relight
Answer
The correct answer is To ensure it can relight. It matches oxygen gas because the evidence is glowing splint and the expected result is relights.
Explanation
The correct option is To ensure it can relight. This is correct because glowing splint is the evidence expected for oxygen gas, and relights is the result that supports the conclusion. Other options are weaker when they confuse gas tests, flame colours, ion-test precipitates, chromatography evidence, or pure-substance/formulation wording.
Common mistake
Confusing Tests for Gases
Students often confuse the test for oxygen with the test for hydrogen, thinking both involve a lighted splint.
Remember that the test for oxygen uses a glowing splint, while the test for hydrogen uses a lighted splint that produces a squeaky pop.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.