UPSC Recruitment Paper 2015 : Chemical Examiner Grade-II in CRCL

UPSC

UPSC Recruitment Paper 2015 : Chemical Examiner Grade-II in CRCL

1. All the lanthanides generally exhibit a valency of

(a) 3
(b) 5
(c) 7
(d) 9

Click Here to Download Full Paper

Courtesy : UPSC

Papers
Civil Services EXAM
UPSC
संघ लोक सेवा आयोग - UPSC