Kerala PSC Previous Years Question Paper & Answer

Title : Research Officer- Chemistry/ Biochemistry
Question Code :

Page:12


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Research Officer- Chemistry/ Biochemistry' And exam conducted in the year 2023. And Question paper code was '027/2023/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.

page: 12 out of 23
Excerpt of Question Code: 027/2023/OL

B:-It can develop a long-lasting immune response with the administration of 1
and 2 doses

C:-Live attenuated vaccines are used to protect Rotavirus, Yellow fever and
MMR

D:-Live attenuated vaccine is stable at normal room temperature
Correct Answer:- Option-D

Question48:-Which of the following method is currently used to deduce the
evolutionary relationship between bacteria?

A:-GC content analysis

B:-DNA-DNA hybridization and analysis
C:-16S rRNA analysis

D:-DNA melting temperature analysis
Correct Answer:- Option-C

Question49:-Multidrug resistance in bacteria may be generated by

A. Horizontal gene transfer

B. Mutations in the DNA

C. Enzymatic Inactivation of the Drug

D. Increased expression of genes that code for multidrug efflux pumps

A:-A only

B:-A and D only

C:-B and C only

D:-All of the above
Correct Answer:- Option-D

Question50:-The databases for the model organisms are given below. Match it to
appropriate model organisms

A. MAtDB i. Mouse

B. FlyBase ii. C.elegans
Cc. WormBase iii. Arabidopsis
0. MGI iv. Drosophilia

A:-A-iii, B-iv, C-ii, D-i
B:-A-iv, B-iii, சே, D-ii
C:-A-ii, B-i, C-iv, D-iii
D:-A-iii, B-ii, C-iv, D-i
Correct Answer:- Option-A

Question51:-lf the centre of gravity of a molecule changes during motion, then the
molecule have,

A:-Rotational Energy
B:-Translational Energy
C:-Vibrational Energy
D:-All the above

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