Question detail
For Identification of common gases, which option uses the correct Chemical analysis evidence for hydrogen 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. A hissing sound
- B. A squeaky pop
- C. A bubbling sound
- D. A whistling sound
Answer
The correct answer is A squeaky pop. It matches hydrogen gas because the evidence is lighted splint and the expected result is squeaky pop.
Explanation
The correct option is A squeaky pop. This response is stronger than the distractors because it keeps the test, observation, and interpretation in the correct order for hydrogen gas. Other options are weaker when they confuse gas tests, flame colours, ion-test precipitates, chromatography evidence, or pure-substance/formulation wording.
Common mistake
Common Mistake in Hydrogen Test
Students often confuse the test for hydrogen with the test for oxygen, thinking both use a lighted splint.
Remember that the hydrogen test specifically uses a lighted splint to produce a squeaky pop, while the oxygen test uses a glowing splint to relight.
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