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NCERT FINGERTIPS-SOME BASIC CONCEPTS OF CHEMISTRY -Mole Concept And Molecular Masses
  1. The measured density at NTP of He is 0.1784 g L^(-1). Calculate the we...

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  2. Which of the following gases will have least volume if 10g of each gas...

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  3. How many number of molecules and atoms respectively are present in 2.8...

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  4. Total number of atoms present in 34 g of NH3 is

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  5. What will be the mass of 100 atoms of hydrogen?

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  6. How many atoms in total are present in 1kg of sugar?

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  7. 1.4 moles of phosphorus trichloride are present in a sample. How many ...

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  8. What will be the standard molar volume of He, if its density is 0.1784...

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  9. In a mixture of gases, the volume content of a gas is 0.06% at STP. Ca...

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  10. What will be the weight of CO having the same number of oxygen atoms a...

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  11. Match the mass of elements given in coloumn I with the no. of moles gi...

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  12. Calculate the number of aluminium ions present in 0.051 g of aluminium...

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  13. Which of the following correctly represents 180 g of water ? 5 mole...

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  14. How many oxygen atoms will be present in 88 g of CO2 ?

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  15. Calculate the total number of electrons present in 1.6 g of methane

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  16. A mixture having 2 g of hydrogen and 32 oxygen occupies how much volum...

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  17. One atom of an element weight 3.32xx10^(-25) g. How many number of gra...

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  18. Fill in the blanks by choosing the correct option.

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  19. The mass of one mole of a substance in grams is called its

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  20. How much copper is present in 50 g of CuSO4

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