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The reaction 3O2rarr2O3 is endothermic s...

The reaction `3O_2rarr2O_3` is endothermic so. `DeltaH` for this reaction is—

A

negative

B

positive

C

zero

D

none of these.

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UNITED BOOK HOUSE-TANTIA HIGH SCHOOL QUESTION PAPER -EXERCISE
  1. Ratio of pi to sigmabonds in benzene is—

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  2. Which is true for adiabatic process —

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  3. The reaction 3O2rarr2O3 is endothermic so. DeltaH for this reaction is...

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  4. The change in entropy in.a reversible adiabatic process is —

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  5. The rms velocity of an ideal gas varies directly with its density as —

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  6. Which has the maximum number of molecules among the following—

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  7. Write two limitations of Bohr’s atomic model.

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  8. Electron affinity of inert elements are positive. Why?

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  9. A metallic oxide contains 60% of metal. Calculate the equivalent weigh...

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  10. Calculate the equivalent weight of phosphate radical.

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  11. Arrange the following ions in ascending order of their ionic radic Na^...

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  12. Is the electronegativity of Sn^(2+) and Sn^(4+) equal or different? Ex...

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  13. When an electron jumps down from 5th Bohr orbit to 3rd Bohr orbit in H...

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  14. State Pauli's exclusion principle.

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  15. How many number of electrons are present in one HClO4 molecule.

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  17. Write the electronic configuration of Fe^(2+) and Cu^+ ions. Atomic nu...

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  18. Why is the radius of cation less compared to that of the corresponding...

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  19. What do you understand by electro-negativity of an element?

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