Kerala PSC Previous Years Question Paper & Answer
Page:13
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Finger Print Searcher -Police Department(CAT.NO:139/2020)' And exam conducted in the year 2021. And Question paper code was '103/2021'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. 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.
75.
76.
77.
78.
79.
80.
The acid used in the synthesis of nylon 66 is
A) Formic acid B) Stearic acid
C) Palmetic acid D) Adipic acid
Which among the following aldehyde undergoes Aldol condensation ?
A) HCHO 8) CgH, - CHO
©) 0٥٥ D) All the above
Which is the correct order of reactivity of alkyl halides in ടാ reaction ۶
A
B
0
0
) RF > RCI> RBr > RI
) RF > RBr>RCI>RI
) RCI > RBr>RF > RI
) Rl > 781 > RCI > RF
Which of the following is an intensive property ?
A) Viscosity B) Mass
C) Volume D) Internal energy
The SI unit of Radioactivity is
A) Curie B) Rutherford
C) Becquerel D) Roengten
X-rays are used for the study of crystal structure because
A) X-rays are completely absorbed by the crystal
103/21
B) The wavelength of X-rays is of the same order of magnitude as the interatomic
spacing in crystals
C) The wavelength of X-rays is very small in comparison with the interatomic
spacing in crystals
D) The crystals are completely transparent to X-rays