Chemistry
Assertion (A): Pure hydrogen burns with a pop sound in air.
Reason (R): Hydrogen forms an explosive mixture with air.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Hydrogen
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Answer
A is false but R is true.
Explanation — Pure hydrogen burns quietly (pale blue flame). The pop sound is heard only when hydrogen is mixed with air/oxygen. So, Assertion (A) is false.
Hydrogen forms an explosive mixture with air, which produces the pop on ignition. So, Reason (R) is true.
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