Kerala PSC Previous Years Question Paper & Answer
Page:5
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name ' Junior Research Officer (SR for ST)' And exam conducted in the year 2023. And Question paper code was '137/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
(ii) All piezoelectric materials are pyroelectric
(111) Ferroelectric materials are also pyroelectric and piezoelectric
A:-Only (ii) and (iii)
B:-Only (i) and (iii)
C:-All of the above (i, ii and iii)
D:-Only (i) and (ii)
Correct Answer:- Option-B
Question22:-The correct order of ligand reactivity for substitution of Cl on trans-
[യം] by the ligand Y in methanol (where the ligand Y is pr,,scw.Br- and NH) is
A‘-WH3>PR3>Br->SCN
B:-PR3>NH,>SCN >Br-
C:-PRy>SCN>Br->N Hg
D:-scN >Br->NH3>PR,
Correct Answer:- Option-C
Question23:-The electronic spectrum of m(#,0),”* appears at 8500, 13800 and
25300 cm . The energy transition corresponding to 8500 em- is
/:-३494070- 2५०५7)
(ھ)و 37 +۔(۶)ور۸:-: تا
നം) ചം)
D:-37,9(F)+3Tj0(F)
Correct Answer:- Option-A
Question24:-Which one of the following is Scherrer formula to determine the
crystallite size of a material from XRD?
ی7
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>>, _ 8८०१9
ہے ظا
هب د _.
സ
ബി
:ما
Correct Answer:- Option-A
Question25:-The Lande g-factor for 53 [5
A:-0.6
B:-1.25
1
D:-0.8
Correct Answer:- Option-D
Question26:-Which of the following pairs have Arachno structures?
A:-st} and ८०५८0)
B:-Co,(CO),, and Pe?