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Which among the following contains only ...

Which among the following contains only one unpaired electron?

A

`[CoF_6]^(3-)`

B

`[Co(C_2O_4)_3]^(3-)`

C

`[Fe(CN)_6]^(3-)`

D

`[MnCl_6]^(3-)`

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AAKASH INSTITUTE-TEST 3-EXERCISE
  1. Which among the following contains only one unpaired electron?

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

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  3. Which among the following is an intensive property?

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

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

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

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

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

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

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  10. According to kinetic theory of gases, the inconrect statement is

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

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  12. At high pressure, the compressibility factor for one mole of van der W...

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  13. The suitable thermodynamic conditions for a spontaneous reaction at al...

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  14. A closed cylinder contains 40 g of SO3 and 4 g of helium gas at 375 K....

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  15. For given mass of an ideal gas at constant temperature

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

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  17. If 200 ml of 0.1 MH2SO4 salution is mixed with 200 ml of 0.15 M NaOH s...

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  18. Unit of surface tension Is

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

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

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  21. The work done by one mole of ideal gas when its temperature is increas...

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