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Platinum, Palladium and Iridium are call...

Platinum, Palladium and Iridium are called noble metals because -

A

Alfred Noble discovered them

B

they are shining, lustrous and pleasing to look at

C

they are found in native state

D

they are inert towards many common regents

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The correct Answer is:
D
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  11. The correct basicity order of the following lanthanide ions is -

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  13. The outer electronic configuration of Gd (Atomic no. 64) is -

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  20. Acidified K(2)Cr(2)O(7) solution turns green when Na(2)SO(3) is added ...

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