61. The lightest gas which is non-inflammable is A.Hydrogen B.Helium C.Oxygen D.Nitrogen

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Abhishek Mishra

2 years ago

Answer: Option B Solution: The lightest gas which is non-inflammable is helium.

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Rani Pal

2 years ago

helium

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Rani Pal

2 years ago

a luqiet

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Rani Pal

2 years ago

a luqiet

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