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Calcium cyanamide is used as fertilizer ...

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

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. Among group 15 hydrides, ........... is most stable.

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

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

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

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

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

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

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  8. Orthophosphorous acid on heating gives ......... and ...........

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

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

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

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

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

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

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

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  16. The negative electron gain enthalpy of F is less/more than Cl.

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  17. Express 1815 in roman numbers.

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  18. Express 1816 in roman numbers.

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  19. HClO4 is less/more acidic than HClO3.

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  20. Hydrogen chloride gas can be dried over conc. sulphuric acid /phospho...

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