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 ' Chemist - Kerala State Co-operative Marketing Federation Ltd ' And exam conducted in the year 2022. And Question paper code was '043/2022'. 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.
9. Which of the following can not exist on the basis of Molecular orbital theory?
(A) पः (B) He,"
© © 0) He,
10. Cesium chloride on heating to 760K changes into :
(A) NaCl structure ®) CsCl(g)
(0) Antifluorite structure (D) ZnS structure
11. Effective Atomic Number (EAN) of Fe in Fe(CO), 15:
(A) 34 رم 35
(C) 36 (0) 87
12. Hybridization of Fe in K3[Fe(CNe)] and Ki[Fe(CNe)] :
(^) 3م025 and 59702 (B) 59902 and 7
(0 مہ2 and 63603 ൯) 59902 and 63903
13. Which of the following metal has lowest melting point?
(A) Antimony (B) Silver
(C) Tin 0) Zine
14. The element with maximum cosmic abundance :
(A) Hydrogen (B) Helium
(C) Nitrogen (D) Oxygen
15. Among the following mixtures, dipole-dipole as the major interaction, is present in :
(A) Benzene and ethanol (B) Acetonitrile and acetone
(0) KCland water (D) Benzene and carbon tetrachloride
16. The value of n in the molecular formula Be, Al,Si,O,¢ is :
(A) 3 (3) 5
© 7 0) 9
17. What is the role of ultra violet radiation in water purification system?
1. 10 inactivates / kill the harmful microorganisms in water
2. It removes all the undesirable odours from the water
3. It quickens the sedimentations of solid particles and improves the clarity of water,
which of the statements given above is/are corrected
(^) lonly ൯) 2 शात् 3 only
(@ 1and 3 only (2) 1,2and3
043/2022 4 A