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Earn 100

The percentage of in peroxidase anhydrous enzyme is by weight (atomic weight ). Then minimum molecular weight of peroxidase anhydrous enzyme is
(a)
(b)
(c)
(d)

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Important Questions on Some Basic Concepts of Chemistry
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The mass of carbon anode consumed (giving only carbon dioxide) in the production of of aluminium metal from bauxite by the Hall process is:
(Atomic mass: )

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An element has the following isotopic composition:
The weighted average atomic mass of the naturally occurring element is closest to

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How many moles of Lead Chloride will be formed from a reaction between of and of
Given the atomic mass of

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An organic compound contains carbon, hydrogen and oxygen. Its chemical analysis gave and . The empirical formula of the compound would be:

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What volume of oxygen gas measured at and is needed to burn completely of propane gas measured under the same conditions?

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Volume occupied by one molecule of water (density ) is:

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of hydrogen and of oxygen were filled in a steel vessel and exploded. Amount of water produced in this reaction will be ?

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of sodium carbonate, is dissolved in enough water to make of solution. If sodium carbonate dissociates completely, the molar concentration of sodium ion, and carbonate ions, are respectively (Molar mass of ):
