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UPPSC Prelims 2025GS-IQ. 43 of 248
Q. 431 markMedium
UPPSC Prelims 2025·GS-I
Which of the following gasses is/are lighter than air? 1. Hydrogen chloride 2. Sulfur dioxide 3. Helium Select the correct answer from the code given below:
(a)1 and 2
(b)Only 3
(c)2 and 3
(d)Only 1