GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1:2
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2:1
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1:1:1
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3:1
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Detailed explanation-1: -The molecule of water is represented as H2O. As we can see, the number of hydrogen atoms present in the molecule is 2 and number of oxygen atom present is 1. So, the required ratio is 2 : 1.
Detailed explanation-2: -The ratio of hydrogen atoms to oxygen atoms used to make water molecules is always 2:1, no matter how many water molecules are being made. Using formulas to indicate how many atoms of each element we have in a substance, we can relate the number of moles of molecules to the number of moles of atoms.
Detailed explanation-3: -The ratio is 2:1 which means there are twice as many hydrogen atoms as there are oxygen.
Detailed explanation-4: -The ratio of the volumes of hydrogen and oxygen obtained on electrolysis of water is 2:1. This is because, one molecule of water contains two hydrogen atoms and one oxygen atom in it.
Detailed explanation-5: -The chemical formula for water is H2O, which means this molecule has 3 atoms: 2 of hydrogen (H) and 1 oxygen (O) atom.