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Ratio of the total energy of electron in...

Ratio of the total energy of electron in the second orbit of `Li^(2+)` to the first orbit of `He^+` is

A

`2 : 3`

B

`5 : 8`

C

`9 : 16`

D

`1 : 4`

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AAKASH INSTITUTE ENGLISH-TEST 3-EXERCISE
  1. Ratio of the total energy of electron in the second orbit of Li^(2+) t...

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  2. In which of the following molecules, intermolecular attraction is pure...

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  3. Which one of the following acids has highest heat of neutralization wi...

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  4. Which among the following is an intensive property?

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  5. The amount of heat required to raise the temperature of 75 kg of ice a...

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  6. A chemical reaction takes place in a vessel of cross-sectional area 15...

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  7. Five moles of an ideal gas undergoes reversible expansion from 1 L to ...

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  8. Enthalpy of which of the following reactions does not represent the st...

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  9. One mole of an ideal gas undergoes change of state from (4 L, 3 atm) t...

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  10. The difference between heat of reaction at constant pressure and at co...

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  11. According to kinetic theory of gases, the incorrect statement is

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  12. The most probable speed of an ideal gas at constant pressure varies wi...

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  13. At high pressure, the compressibility factor for one mole of van der w...

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  14. The correct thermodynamic conditions for the spontaneous reaction at a...

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  15. A closed cylinder contains 40 g of SO2, and 4 g of helium gas at 375 K...

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  16. In the electrolysis of H2O , 11.2 liters of H2 was liberated at cathod...

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  17. Which among the following will boil at highest temperature?

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  18. If 200 ml of 0.1 MH2SO4 solution is mixed with 200 ml of 0.15 M NaOH s...

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  19. Unit of surface tension is

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  20. For which of the following processes, entropy change is negative?

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  21. A liquid is in equilibrium with its vapour at a certain temperature. I...

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