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Which of the following is evolved when N...

Which of the following is evolved when Na2CO3 is heated ?

A

CO2

B

CO

C

O2

D

no gas evolved

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
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  2. Plaster of paris is hardens by .......................

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  3. Which of the following is evolved when Na2CO3 is heated ?

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  4. If pH of the solution is 13 then what does it indicate?

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  5. Why conc. H2 SO4 is viscous and has high boiling point ?

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  6. True of False: In group 16, the volatility of hydrides first increases...

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  7. True of False: Both pyrophosphoric acid and hypophosphoric acid have ...

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  8. A solution turns red litmus blue, its pH is likely to be :

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  9. True of False: In SF4, S involves sp^3d hybridisation.

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  10. True of False: Nitrogen cannot form compounds of the type R3N =O while...

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  11. Complete the following statement- Composition of brass is-

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  12. True of False: Concentrated H2SO4 can be used to prepare HBr from NaBr...

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  13. "A" is a soluble acidic oxide. compared to pH of pure water what will ...

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  14. "B" is a soluble basic oxide. compared to pH of pure water what will b...

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  15. An aqueous solution has a pH value of 7 . is this solution is acidic, ...

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  16. Explain why blue vitriol changes to white upon heating.

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  17. Which of the following gives CO2 on heating ?

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  18. Give the name of following functional group ROR"

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  19. Name the functional group present in methoxy methane

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

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