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Oleum is formed when............ is pass...

Oleum is formed when............ is passed through conc. `H_2SO_4`.

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. Nitrogen is a gas because of its tendency to form .................

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

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

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

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

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

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

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

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

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

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

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

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  13. Orthophosphorous acid on heating gives ......... and ...........

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  14. The nitrogen oxide which is blue liquid below 253K................. is...

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  15. The formula of epsom salt is................ and that of baryte is ......

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  16. Choose the correct alternative: Reducing power of hydrides of group 16...

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  17. SF4 molecule has square planar /see saw geometry.

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  18. Nitrogen gas is obtained by heating ammonium nitrite/ammonium nitrate.

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  19. Both In2O3 and Tl2O3 are acidic/basic oxides.

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  20. In H2S2O8, the oxidation state of S is +6/+7.

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