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Earn 100

What is the mass ratio of protium : deuterium : tritium (the isotopes of hydrogen) ?
(a)
(b)
(c)
(d)

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Important Questions on Hydrogen
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Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75kg person would gain if all atoms are replaced by atoms is:

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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Hydrogen is the most abundant element in the Universe, but it is not the most abundant gas in the troposphere.
Reason R: Hydrogen is the lightest element.
In the light of the above statements, choose the correct answer from the options given below:

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Which of the following statements about hydrogen is incorrect?

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The equation that represents the water-gas shift reaction is :

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1) It exists as a diatomic molecule.
2) It has one electron in the outermost shell.
3) It can lose an electron to form a cation which can freely exist.
4) It cannot form ionic compounds.

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