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(A): Transition elements form alloys eas...

(A): Transition elements form alloys easily
(R) : Transition elements have high melting points

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): The spin only magnetic moment of Sc^(+3) 1.73 BM (R) : The spin...

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  2. (A) Cu^(+) is diamagnetic (R) Ions With d^(10) configuration are dia...

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  3. (A): Transition elements form alloys easily (R) : Transition element...

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  4. (A): Transition elements form alloys very easily. (R): They exhibit ...

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  5. (A): Outermost electronic configuration of Pt is 5d^(9)s^(1) (R) : ...

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  6. (A): Elements of second and third transition series have nearly same a...

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  7. (A) : Transition metals form colored ions (R): They have completely ...

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  8. (A): Magnetic moment of Mn^(+2) is 5.8 B.M (R): Mn^(+2) has five unp...

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

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  10. (A): Zn(II) compounds are diamagnetic. (R): Zn(II) has all its elect...

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  11. (A): FeO is basic in character. (R): Oxides of transition metals are...

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  12. (A): Pyrolusite is an ore of manganese. (R) : Formula of pyrolusite ...

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  13. (A): Equivalent mass of K(2)Cr(2)O(7), when it acts as oxidizing agent...

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  14. (A): Ti(IV) in aqueous solutions is colour less. (R): Ti(IV) has no ...

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  15. (A): In alkaline medium, KMnO(4) oxidizes iodides to iodates. (R): K...

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  16. (A): Zr and Hf have nearly equal atomic radii. (R): Zr and Hf belong...

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  17. (A) Scandium is the lightest transition metal, (R) Atomic radius of ...

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  18. (A) The most common oxidation state of lanthanides is + 3. (R) Lanth...

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  19. (A): Ce^(4+) is a good oxidizing agent. (R): Sm^(2+) is a good reduc...

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  20. (A): Zinc does not show characteristic properties of transition metals...

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