JEE Main 2015 Chemistry question

Not in JEE Main or NEET syllabus

Which physical property of di-hydrogen is wrong?

(1)Tasteless gas
(2)Odourless gas
(3)Colourless gas
(4)Non-inflammable gasCorrect

Answer: (4)

Solution

Dihydrogen is indeed colourless, odourless and tasteless, so statements (1), (2) and (3) are correct. However it is **highly inflammable** — it burns in air with a pale blue, almost invisible flame, releasing 286 kJ mol, and mixtures with air between

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Question ID VK-115352