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 'Assistant Professor Chemistry' And exam conducted in the year 21. And Question paper code was '014/21'. 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.
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014/21
The electronic spectrum of (Cu(H,0),]* is given below. (4 Marks)
ध
|
3
8
ತೌ
5000 10000 15000
शता
Explain the reason for this unsymmetric band formation.
A"[B)” JO, spinels are compounds in which tetrahedral sites are occupied by divalent cations
and octahedral sites are occupied by trivalent cation. Account for the formation of inverse
spinels when one of the cation is a transition metal. (5 Marks)
॥ ७५५६३१8 Cram’s rule with the stereochemistry of reaction between 2-phenylpropanol and
methyl magnesium bromide. (5 Marks)
Use Hammett plots to deduce the sensitivity of an ester hydrolysis reaction to the electronic
effects. (5 Marks)
The 'H NMR spectrum of a compound with formula C,,H,,0, showed the following
peaks : 8 : 1.4 ppm, triplet, (3.58, (4.00,q) (6.8, 9), (7.2, 6), (12.5, a broad peak).
The DEPT - 135, DEPT - 90 and normal ع peaks are tabulated below : (5 Marks)
| 669135 | 135 DEPT 90
Deduce the structure of the compound.
Derive Gibbs-Duhem equation. (5 Marks)
Describe primary and secondary kinetic isotopic effect. How can it be used for mechanistic studies ? (5 Marks)
Set up Hickel Secular Equation and HMO diagram for 1, 3-butadiene. Calculate the delocalization
energy. (5 Marks)
Explain the use of calixarenes as molecular receptors. (5 Marks)
Construct the character table for PH, molecule symmetry. (5 Marks)
سي —_—