Kerala PSC Previous Years Question Paper & Answer
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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.
Correct Answer:- Option-D
Question45:-Among the following, which pair of atoms are isobars
A:-#2Ca and {Ar
B:-3/clana ci
C:-Pc ana [20
D:-All the above are isobars
Correct Answer:- Option-A
Question46:-How many groups and periods are there in modern periodic table ?
A:-7 groups and 8 periods
B:-8 groups and 18 periods
C:-8 groups and 7 periods
D:-18 groups and 7 periods
Correct Answer:- Option-D
Question47:-The inert element among the following is
A:-Hydrogen
B:-Sodium
C:-Helium
D:-Oxygen
Correct Answer:- Option-C
Question48:-The main shell electronic configuration of Fluorine atom is (Atomic
number of Fluorine = 9)
A:-9
B:-2, 7
C:-1, 2,6
D:-2,2,5
Correct Answer:- Option-B
Question49:-Trend of atomic size along the period and down the group.
A:-Increases along the period and decreases down the group
B:-Decreases along the period and increases down the group
C:-Increases along the period and down the group
D:-Decreases along the period and down the group
Correct Answer:- Option-B
Question50:-Choose the correct pairs of elements with symbol
(i) Magnesium - Mg
(ii) Aluminium - Ar
(iii) Chlorine - Cl
(iv) Potassium - Pt