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Balance the chemical equation by ion-ele...

Balance the chemical equation by ion-electron method : `CuO + NH_(3) to Cu + N_(2) + H_(2)O`

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Balance the following chemical equation by ion electron method : MnO_4^(-1) + (COO)_2^(2-) + H^+ rarr Mn^(2+) + CO_2 + H_2O

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CHHAYA PUBLICATION-MODEL QUESTIONS PAPER -SET II ( SECTION II ) ( GROUP C)
  1. Write the postulates of Bohr's atomic model .

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  2. Why is the 1st ionisation potential of B less than that of Be ?

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  3. Arrange the following in increasing order of radius : Mg^(2+) , Al^(...

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  4. What is lanthanide contraction ? Write the causes of this phenomenon .

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  5. In spite of having the same molecular mass , boiling point of ethanol ...

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  6. Write down the hybridisation states of the central atoms of CO(2) and ...

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  7. 4 g of He gas at 27^(@) C is expanded isothermally and reversibly to 1...

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  8. Calculate the enthalpy of combustion of ethylene . Given : C(2) H(6)...

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  9. Write the significance of the gas contain 'a' and 'b'.

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  10. Define coefficient of viscosity ?

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  11. Balance the equation by ion-electron method : MnO(4)^(-) + Fe^(2+) to ...

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  12. Balance the chemical equation by ion-electron method : CuO + NH(3) to ...

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  13. Determine the volume strength of 1.5 (N) H(2)O(2).

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  14. Why is hard water not used in boilers ?

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  15. Why the alkali metals cannot be extracted by chemical reduction method...

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  16. Which alkali metal is the most abundant in earth's crust ?

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  17. Why is the aqueous solution of BeCl(2) acidic ?

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  18. Which is Gr.-II metal plays an important role in coagulation of blood ...

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  19. Write the IUPAC name of CH(3) - CH(2)- CH (CH(3))- COOH

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  20. Point out the electrophilic centre of CH(3)CHO and CH(3)CN

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