Q: Arrange the following permanent gases present in the atmosphere in ascending order: 1. Helium 2. Hydrogen 3. Neon 4. Xenon Select the answer using the code given below:
(a)3, 1, 2, 4
(b)3, 1, 4, 2
(c)2, 4, 1, 3
(d)2, 4, 3, 1
Correct Answer: (c)
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