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In brown ring test for nitrates, Fe^(2+)...

In brown ring test for nitrates, `Fe^(2+)` ion reduces `NO_3^-` ion to ......... Which reacts with `Fe^(2+)` ion to form a brown ring complex having the molecular formula ..........

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. What is the oxidation number of central atom [Pt Cl (NH2CH3)(NH3)2]C...

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  2. The formula of acidic nitrogen hydride is ..........

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  3. In brown ring test for nitrates, Fe^(2+) ion reduces NO3^- ion to .......

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  4. PCl5 in solid state exists as ionic compound having cation ..............

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  5. The strongest reducing agent among all the halide ions is ...............

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  6. In CIF3 and SF4, Cl involves............... hybridisation and S involv...

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  7. Among hydrides of oxygen family, the strongest reducing agent is ........

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  8. Nitrogen is a gas because of its tendency to form .................

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  9. In XeF4, xenon involves.......... hybridisation and its shape is ........

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  10. Oleum is formed when............ is passed through conc. H2SO4.

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  11. The two neutral oxides of nitrogen are........... and ...............

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  12. In gaseous state nitric oxide is ............ while in the liquid or s...

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  13. Among group 15 hydrides, ........... is most stable.

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  14. P4O6 and P4O10 dissolve in water to give ......... and .........

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  15. Calcium cyanamide is used as fertilizer under the name .............

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  16. The oxide of nitrogen obtained on heating lead nitrate is ...............

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  17. Phosphorus reacts with nitric acid to form ......... acid.

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  18. Laughing gas is obtained on heating a mixture of NH4Cl and ......... b...

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  19. Hypophosphoric acidis......... basic but pyrophosphorous acid is ........

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  20. Orthophosphorous acid on heating gives ......... and ...........

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