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Chemistry Test ...

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  • Question 1
    4 / -1

    How much iron will be obtained by reduction of 1 kg of Fe2O3 according to this reaction :-

    Fe2O3 + 3H2 → 2Fe + 3H2O

  • Question 2
    4 / -1

    The total number of neutrons present in 54 ml H2O(ℓ) are :-

  • Question 3
    4 / -1

    Actual mass of hydrogen molecule is approximately:-

  • Question 4
    4 / -1

    A compound was found to contain nitrogen and oxygen in the ratio 28:80. The empirical formula of compound is :-

  • Question 5
    4 / -1

    If 0.5 mol of CaBr2 is mixed with 0.2 mol of K3PO4, the maximum number of moles of Ca3(PO4)2 that can be formed is :

    3CaBr2 + 2K3PO4 → Ca3(PO4)2 + 6KBr

  • Question 6
    4 / -1

    What volume of oxygen gas measured at 0°C and 1 atm is needed to burn completely 2L butane (C4H10) under same conditions ?

  • Question 7
    4 / -1

    How many litres of air are required to burn 5L methane ? (Air contains O2 20% by volume) :-

  • Question 8
    4 / -1

    10 moles of CH4 combines with 18 moles of oxygen. Calculate the moles of CO2 formed after combustion :-

  • Question 9
    4 / -1

    For reaction A + 2B → C. The amount of product formed by starting the reaction with 5 mole A and 8 mole B is :-

  • Question 10
    4 / -1

    Which and what amount will remain unreacted after the reaction between 3g carbon and 2g oxygen to produce CO.

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