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Two elements 'A' and 'B' (atomic weights...

Two elements 'A' and 'B' (atomic weights 75 and 16 respectively) combine to give a compound having `75.8%` of 'A'. The compound has the formula (St. John's) 

A

XY

B

`X_(2)Y`

C

`X_(2)Y_(2)`

D

`X_(2)Y_(3)`

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The correct Answer is:
D
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AAKASH SERIES-STOICHIOMETRY-Objective Exercise -1
  1. The percentage of nitrogen in urea (NH(2)CONH(2)), is

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  2. 10 g of hydrofluoric acid gas occupies 5.6 lit of volume at STP . If t...

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  3. Two elements 'A' and 'B' (atomic weights 75 and 16 respectively) combi...

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  4. An organic compound having C, H and S elements contains 4% sulphur. Th...

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  5. 5.6g of an organic compound on burning with excess of oxygen gave 17.6...

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  6. An organic compound contains C = 40%, H = 13.33% and N = 46.67%. Its e...

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  7. An organic compound containing Cand H has 92.3% of carbon. Its empiric...

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  8. Gain of electron or electrons is termed

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  9. When Zn metal is added to CuSO(4) solution, Cu is precipitated, it is ...

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  10. Highest oxidation number that is exhibited by fluorine is

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  11. Oxidation state of .S. in S8 molecule is

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  12. Oxidation state of Fe in K(4)[Fe(CN)(6)]

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  13. Oxidation number and valency of oxygen in OF(2) are

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  14. In which of the following the oxidation state of chlorine is +5?

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  15. All elements commonly exhibit an oxidation state of

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  16. The maximum oxidaton state that fluorine exhibits is

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  17. The element that always exhibits a negative oxidation state in its com...

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  18. The minimum oxidation state that nitrogen exhibits is

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  19. In the conversion of K(2)Cr(2)O(7) to K(2)CrO(4) the oxidation number ...

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  20. Oxidation state of N in N(3)H is

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