Which gas is commonly used in balloons due to its low density and non-reactivity?

Practice MCQ for SSC, UPSC, RRB Exams

A. Hydrogen A.
B. Helium B.
C. Oxygen C.
D. Nitrogen D.

Correct Answer: B সঠিক উত্তর: B

Explanation ব্যাখ্যা

Helium (He) is the most common gas used in balloons due to its low density and non-reactivity. It is lighter than air, causing balloons filled with helium to float, and it's non-flammable, making it safe for use in various applications.

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