Kerala PSC Previous Years Question Paper & Answer
Page:14
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Non Vocational Teacher Chemistry (By Transfer)' And exam conducted in the year 2023. And Question paper code was '162/2023/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.
Correct Answer:- Option-B
Question68:-In microwave synthesis, what does the microwave radiation in heating
the reaction mixture?
A:-lt directly heats the reaction vessel
B:-It heats the reaction mixture via convection
C:-lt generates heat through chemical reactions
D:-It excites the molecules, leading to rapid internal heating
Correct Answer:- Option-D
Question69:-Which technique is mainly used for the production of single walled
carbon nanotubes (SWCNTs) with controlled chirality and high purity?
A:-Arc discharge
B:-Chemical Vapor Deposition (CVD)
C:-Ball milling
D:-Electrochemical exfoliation
Correct Answer:- Option-B
Question70:-In which crystal symmetry class are piezoelectric materials most
commonly found?
A:-lsometric (cubic)
B:-Tetragonal
C:-Orthorhombic
D:-Trigonal (rhombohedral)
Correct Answer:- Option-D
Question71:-The mode of questioning that involves going deep into student
responses through step by step questioning with a view to elicit the required
responses is termed as
A:-Recapitulatory Questioning
B:-Probing Questioning
C:-Refocusing Questioning
D:-Redirected Questioning
Correct Answer:- Option-B
Question72:-Herbartian steps in lesson planning include:
Preparation and Presentation
Discussion and Investigation
Generalisation and Application
Comparison and Expression
A:-Only (i) and (ii)
B:-Only (ii) and (iii)
C:-Only (i) and (iii)
D:-Only (iii) and (iv)