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Mole Concept Te...

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  • Question 1
    4 / -1

    Vapour density of a gas is 22. Its molecular mass will be:​

  • Question 2
    4 / -1

    What is the mass of 0.20 mole of C2H5OH (ethanol)?

  • Question 3
    4 / -1

    Consider the reaction between hydrogen and oxygen gases to form water. Which of the following is/are not conserved in the reaction?
    2H2(g) + O2(g) → 2H2O(l)​

  • Question 4
    4 / -1

    Mass of sucrose C12H22O11 produced by mixing 84 gm of carbon, 12 gm of hydrogen and 56 lit. O2 at 1 atm & 273 K according to given reaction, is C(s) + H2(g) + O2(g) → C12H22O11 (s)

  • Question 5
    4 / -1

    Suppose the elements X and Y combine to form two compounds XY2 and X3Y2. When 0.1 mole of XY2 weighs 10 g and 0.05 mole of X3Y2 weighs 9 g, the atomic weights of X and Y are

  • Question 6
    4 / -1

    Number of atoms present in 52 g of helium is:
    (NA is Avogadro’s constant Gram atomic mass of He is 4 g)​

  • Question 7
    4 / -1

    The vapour density of a mixture of gas A (Molecular mass = 40) and gas B (Molecular mass = 80) is 25.Then mole % of gas B in the mixture would be

  • Question 8
    4 / -1

    Atomic mass of Cl is 35.5 g. Calculate the mass of 4.50 moles of chlorine gas, Cl2.​

  • Question 9
    4 / -1

    Atomic mass of bromine is 80 g. The mass of four moles of molecular bromine (Br2) is:​

  • Question 10
    4 / -1

    Number of nitrogen atoms present in 1.4 g of N2

  • Question 11
    4 / -1

    Volume of 17g of NH3 at N.T.P. will be​

  • Question 12
    4 / -1

    Which of the following has maximum number of moles?​

  • Question 13
    4 / -1

    Molar mass of F2 is 38 g. How many atoms are present in 0.147 mole of F2?​

  • Question 14
    4 / -1

    Mass of 6.022 x 1022 molecules of CO2 is about:​

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