CBSE /Class 9
Science MCQ Based On Atom and molecules chemical formula
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CBSE Class 9 Science Atom and molecules chemical formula
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In what ratio do the atoms of hydrogen and oxygen combine to form a water molecule?
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Think of balancing the valencies.
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What is the charge on a potassium ion and a sulphate ion?
What is the molecular mass of 1 mole of Methane
What is an Avogadro Number?
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