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(A) The purple colour of KMnO4 is due to...

(A) The purple colour of `KMnO_4` is due to the charge transfer transition
(R) The intense colour in most of the transition metal complexes is due to d-d transition

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

Verified by Experts

The correct Answer is:
B

Both (A) and (R) are true and (R) is not the correct explanation of (A)
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AAKASH SERIES-D-BLOCK ELEMENTS-OBJECTIVE EXERCISE-4 (ASSERTION (A) & REASON (R) TYPE QUESTIONS )
  1. (A) Aqueous solution of FeCl3 is acidic due to cationic hydrolysis ...

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  2. (A) Mercury is liquid at room temperature (R) In mercury, there is ...

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  3. (A) The purple colour of KMnO4 is due to the charge transfer transitio...

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  4. (A) The highest oxidation state of Os is +8. (R) Osmium is a 5d elem...

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  5. (A) Atomic size of silver is almost equal to that of gold. (R) d sub...

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  6. (A) Cr^(+2) is strong reducing agent in aqueous solution. (R) Cr^(+2...

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  7. (A) Potassium dichromate is used as a primary standard in volumetric a...

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  8. (A) Potassium ferrocyanide and potassium ferricyanide both are paramag...

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  9. (A) Zn^(+2) is diamagnetic (R) The electrons are lost from 4s orbita...

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  10. (A) d block elements are transitioned between s-block metals and p-blo...

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  11. (A) E.C of Pd is [Kr] 4d^(8)5s^(2) (R) Palladium contains 8e^(-) in ...

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  12. (A) Sc exhibit variable oxidation states. (R) Sc is not a transition...

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  13. (A) : Cu^(+2)(aq) is more stable than Cu^(+)(aq) (R): Heat of hydrat...

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  14. (A) Cr^(+2) is reducing in nature. (R) Half filled t(zg) level in Cr...

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  15. (A) Many copper(I) compounds are unstable in aqueous solution. (R) ...

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  16. (A) The number of unpaired electrons in the following gaseous ion Mn^...

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  17. (A) MnO(4)^(-1) is strong oxidizing agent. (R) Mn^(+2) is stable wit...

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  18. (A) The free gaseous Cr atom has six unpaired electrons. (R) Half fi...

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  19. (A) E^(@) for Mn^(+3)//Mn^(+2) is more positive than Cr^(3+)//Cr^(+2) ...

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  20. (A) K2Cr2O7 is used as primary standard in volumetric analysis. (R) ...

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