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Give the chemical formula of Borax....

Give the chemical formula of Borax.

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The correct Answer is:
`Na_(2)B_(4)O_(7)10H_(2)O`
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SUBHASH PUBLICATION-ANNUAL EXAMINATION QUESTION PAPER NORTH-2019-PART-D
  1. Give the chemical formula of Borax.

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  2. Calculate the amount of carbondioxide produced by the combustion of 24...

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  3. Define Mole. What is the Value of Avagadro's Number.

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  4. Express the number 232.508 in scientific notation.

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  5. What are the observation made in Rutherford alpha- particle experiemen...

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  6. Write any three postulates of Bohr's model for hydrogen atom.

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  7. Name any three quantum numbers and write their significance.

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  8. State heisenberg's uncertainty principle. Write the mathematical equat...

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  9. Write any tree postulates of Kinietic theory of gases.

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  10. Define critical temperature. Write the value of critical temperatue fo...

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  11. Calculate the standard enthaly of formation of Methane. Given that the...

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  12. What is the change in the value of entropy when ice melts to give wate...

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  13. State Hess's law of constnat heat summation. Illustrate with example.

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  14. Mention any two thermodynamic criteria for spontaneous process.

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  15. Define equilibrium constant of a reaction.What is the unit of equilibr...

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  16. What is the effect of increae in temperature for the reaction? 2NO(2...

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  17. Write the relationship between the solubility and solubility product o...

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  18. Calculate the pH of 0.001 M NaOH.Assuming complete dissociation of bas...

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  19. Classify the following species into lewis acid and lewis base. (i) O...

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  20. Give an example for basic buffer.

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  21. Explain functional isomerism with an example.

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