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Write chemical equation for thermal deco...

Write chemical equation for thermal decomposition of ammonium dichromate.

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`(NH_4)_2Cr_2 O_(7(s)) overset(Delta) rarr N_2(g) + Cr_2O_(3(s)) + 4H_2O_((g))`
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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Why the elements of the second row (first short period)? exhibit a nu...

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  2. Which of the following is/are not known? (i) PCl3 , AsCl3 , SbCl3 ,...

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  3. Write chemical equation for thermal decomposition of ammonium dichroma...

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  4. Account for the fact that ammonia is a good complexing agent.

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  5. Why is phosphoric acid syrupy?

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  6. Name two oxoacids of nitrogen and write the oxidation state of nitroge...

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  7. What is the difference between the nature of pi-bonds present in H3PO3...

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  8. Name three allotropes of phosphorus. Which out of these is most reacti...

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  9. Why is white phosphorus stored under water?

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  10. How is pyrophosphoric acid related to orthophosphoric acid?

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  11. Give reasons for the following : (i) Nitric oxide become brown on ex...

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  12. Give reasons for the following : NO2 is considered a mixed anhydride.

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  13. What is the basicity of phosphorus acid ?

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  14. Name the series of salts that are formed by orthophosphoric acid with ...

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  15. What is the state of hybridization of nitrogen in NO3^(-) ion ?

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  16. NO2 readily forms a dimer. Explain.

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  17. What is laughing gas ? How is it prepared?

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  18. On being slowly passed through water, PH3 forms bubbles but NH3 dissol...

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  19. Why does H3PO3 act as a reducing agent but H3PO4 does not?

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  20. Mention one use of hydrazine.

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