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Arrange the following oxides as per thei...

Arrange the following oxides as per their increasing order of acidic nature.`B_2O_3 ,CO_2,F_2O& N_2O_5` State modern periodic law.

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UNITED BOOK HOUSE-MODEL QUESTION PAPER 11-EXERCISE
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  2. Calculate the radius of the 3^(rd) orbit in which electron has the vel...

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  4. Arrange the element as per increasing electronegativity O, Te, Se, S. ...

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  5. Why the boiling point of NH3 is higher than that of PH3? Give an examp...

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  6. Why the bond length of BF3 is less than that of BF4? Find the hybridi,...

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  7. Calculate th r.m.s. velocities of CO2 at 27^@C. Show that C(rms) =sqrt...

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  9. Calculate the enthalpy for the reaction at 27^0C. C2 H5 Cl (s) rarr C...

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  10. Calculate Delta H-DeltaU at 25^@C for the reaction:H2(g)+( 1/2)O2(g) =...

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  11. What is the oxidation number of Mn in K2 Mn O4?

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  12. Calculate the oxidation no of * marked atom:*Fe (CO)5

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  13. Balance the equation by oxidation no method :AI + NaOH + H2O rarr NaAl...

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  14. Balance by oxidation number method P4 +NaOH + H2O rarr NaH2 PO2 + PH3...

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  15. What do you mean by Interstitial and non stoichiometric hydrides? Give...

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  16. Why K2 CO3 can’t be prepared by solvey process? What is backing soda?

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  17. What is carbene? How many types of carbene present? Give example.

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