GK
BASIC GENERAL KNOWLEDGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hydrogen
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Ammonia
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Carbon Dioxide
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Nitrogen
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Detailed explanation-1: -Hydrogen is the lightest gas present abundantly in the universe with an atomic mass of. 00784 u . It is one of the most reactive gases and it is also the most abundant gas in the universe. It exists in diatomic form. And it is the first element in the modern periodic table.
Detailed explanation-2: -It is a diatomic gas. Hydrogen is the lightest element of the periodic table, thus, hydrogen gas is the lightest gas. The atomic mass of hydrogen gas (H2) is twice the mass of hydrogen element (H). The atomic mass of the hydrogen element is 1 gram.
Detailed explanation-3: -Hydrogen is lighter than other gases present in air. Therefore, when measuring the weight of other gases and hydrogen, hydrogen is found to be 14 times lighter than air.
Detailed explanation-4: -Hydrogen, being the lightest existing gas (7% the density of air, 0.08988 g/L at STP), seems to be the most appropriate gas for lifting. Helium is the second lightest gas. More items