Quizglory::Challenge Yourself

Atoms and Molecules Part-2

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Q.1 : Which postulate of Dalton atomic theory suggests the law of conservation of mass?
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Q.2 : The elements present in baking soda are:
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Q.3 : When 5g of Calcium is burnt in 2g of Oxygen then 7g of Calcium oxide is produced. What mass of calcium oxide will be produced when 5g of calcium reacts with 20g of oxygen?
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Q.4 : The law of conservation of mass was given by:
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Q.5 : The number of atoms present in a molecule of element is called its:
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Q.6 : 1u is equal to
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Q.7 : The atoms of which of the following element exist in free state?
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Q.8 : A molecule of hydrogen is represented as:
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Q.9 : The formula mass of NaCl is:
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Q.10 : If the molecular mass of a compound is 74.5 then the compound is
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