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.
25. Which of these can be used as moth repellent?
(A) Benzene hexachloride ൯) Benzal chloride
(C) Hexachloroethane (1) Tetrachloroethane
26. What is the major organic product obtained from the following reaction?
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27. Which of the following statement is incorrect about nucleophiles?
(A) Nucleophiles have an unshared electron pair and can make use of this to react
with an electron deficient species
(B) The nucleophilicity of an element (an electron donor) generally increases on going
down a group in the periodic table
(C) A nucleophile is electron-deficient species
(D) All good nucleophiles are good bases when we deal across the period
28. A layer of reddish-brown precipitate which is formed on the iron knife, when an iron knife is
dipped in an aqueous solution of copper sulphate is of which compound or element?
(A) Iron sulphate (B) Copper
(C) Rust (D) Copper sulphate
29. Who proposed arrow pushing method of showing progression of elections?
(A) Robert Burns Woodward (B) Adolf Von Baeyer
(C) Victor Grignard ൯൩) Sir Robert Robinson
80. What is obtained by thermolysis of azides?
ھ) Free radicals ൯) Carbocation
(0 Nitrene ൯൩) Arene
31. Results from long-term exposure to lower doses of a chemical is known as
(^) Acute toxicity ൯) Chronic toxicity
(C) Moderate toxicity (D) High toxicity
043/2022 6 A