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Six grams each of magnesium and oxygen w...

Six grams each of magnesium and oxygen was allowed to react. Assuming that the reaction is complete, the mass of MgO formed in the reaction is

A

42 grams

B

28 grams

C

21 grams

D

10 grams

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-STOICHIOMETRY-Objective Exercise -1
  1. 4ClO(3(aq))^(-)to3ClO(4(aq))^(-)+Cl((aq))^(-) is an example of

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  2. Excess of KI reacts with CuSO(4) solution and then Na2S2O3 solution is...

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  3. Six grams each of magnesium and oxygen was allowed to react. Assuming ...

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  4. Which one of the following is an example of disproportionation reactio...

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  5. The strength of an aqueous solution of I(2) can be determined by titra...

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  6. In the standardization of Na2S2O3 using K2Cr2O7 by iodometry, the equi...

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  7. The role of starch in iodometric titrations is that

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  8. Number of moles of FeSO4 that can reduce one mole of permanganate in a...

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  9. Equivalent weight of As(2)O3 in the following equation As(2)O3 +2I(2) ...

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  10. Which of the following statement is correct for a galvanic cell?

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  11. In a electrochemical cell

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  12. The electrode potential of an electrode is

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  13. Which of the following may not be present in all galvanic cells

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  14. Daniel cell is shown as

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  15. Which of the following metals will not react with solution of CuSO4 ?

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  16. In the copper zinc cell

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  17. The mass ofCO(2) obtained when 2g of pure limestone is calcined is

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  18. What is the weight of oxygen that is required for the complete combust...

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  19. Xg of Ag was dissolved in HNO3 and the solution was treated with exces...

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  20. 1.2g of Mg (At. mass 24) will produce MgO equal to

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