Kerala PSC Previous Years Question Paper & Answer
Page:6
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.
ചിച്ച് aNd sez
D:-[wis(co),)” and ام
Correct Answer:- Option-C
Question27:-Which is the most commonly used activator ion for use in red
phosphors for colour television screens?
At-Mn24
Bi-cu2+
0:-றயர்
D:-Ag*
Correct Answer:- Option-C
Question28:-Ildentify the end product B is the following reaction sequence:
[മച്ചി |
A:-trans - [Picig(vH3)(N02)]
B:-Cis - [2000482209]
C:-Cis - [५
ಔ:-07875- [7೬೦ (೫೦
Correct Answer:- Option-B
Question29:-The correct order of basicity of phosphines is
A:-PF3>P(OPh);>PPh3>PEt3
B:-PPh3>P(OPh);>PEt3>PF3
C:-P(OPh),>PEtz>PF3>PPh3
D:-PEi3>PPh3>P(OPh);>PF3
Correct Answer:- Option-D
Question30:-Which is the correct option about the type of intrinsic defect observed
in (i) MgO and (ii) CdTe?
A:-i-Frenkel Defect, ii-Schottky Defect
B:-i- Schottky Defect, ii- Frenkel Defect
C:-Schottky Defects in both (i) and (ii)
D:-Frenkel Defects in both (i) and (ii)
Correct Answer:- Option-B
Question31:-The IUPAC name of the following compound is
OO
A:-Spiro [5.4] deca-2,7-diene