Kerala PSC Previous Years Question Paper & Answer
Page:11
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Laboratory Assistant Common Facility Service Centre' And exam conducted in the year 2023. And Question paper code was '019/2023/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.
used for the manufacturing of rio, is
A:-Monozite
B:-Sillimanite
C:-Rutile
D:-Ilmenite
Correct Answer:- Option-D
Question57:-The ore of some metals are given below. Pick the correct match.
A:-Al - Bauxite
B:-Fe - Copper pyrites
C:-Cu - Calamine
D:-Zn - Hematite
Correct Answer:- Option-A
Question58:-The most abundant element in earth's crust is
A:-Carbon
B:-lron
C:-Oxygen
D:-Nitrogen
Correct Answer:- Option-C
Question59:-The depletion of ozone layer is caused by
A:-Ozone
B:-Chlorofluorocarbons
C:-Carbon dioxide
D:-Ultraviolet radiation
Correct Answer:- Option-B
Question60:-Chlorine is prepared in the laboratory by heating
A:-Kmno, and concentrated HCl
B:-Kmno, and concentrated #50,
C:-mncl, and concentrated HCl
D:-All the above reactants can be used for the preparation of chlorine
Correct Answer:- Option-A
Question61:-Pick the correct statement about allotropes
i. Compounds having same physical properties and different chemical properties.
ii. Different forms of same element.
iii. Compounds having different physical properties and same chemical properties.
iv. Same forms of different elements.
A:-Only i and ii
B:-All of the above (i, ii, iii and iv)