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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Research Officer- Chemistry/ Biochemistry' And exam conducted in the year 2023. And Question paper code was '027/2023/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-B
Question52:-Identify the correct statement from the following
A. Spectroscopy is the study of the interaction between matter and radiated
energy
B. Spectrometry is a practical measurement in the atomic and molecular
balances of matter
C. Spectroscopy is a theoretical method of science that does not produce any
results
D. Spectrometry the study of matter's absorption properties or absorption
behaviour when exposed to electromagnetic radiation.
A:-A, B and C are correct
B:-A, B and D are correct
C:-A, C and D are correct
D:-All statements are correct
Correct Answer:- Option-D
Question53:-When we consider Raman scattering spectrum, and if we designate the
intensities of the most intense lines of the stoke lines, Anti stokes lines and Raleigh
scattering are 1,,7, and 1. respectively, the the inceasing order will be
1جر1<ی1-نط
.7<+1.<1-:8
(:-1,०7.०7६
D:-1.>1a>15
Correct Answer:- Option-D
Question54:-Carbonyl group show anx somewhere in ultraviolet region, but their 2,4
dinitrophenylhydrazone derivatives show 2.x in the visible region. This is due to
A:-Hypsochromic shift
B:-Bathochromic shift
C:-Hyperchromic shift
D:-Hypochromic shift
Correct Answer:- Option-B
Question55:-Select the false statement(s) from the following
A. As bond order decreases, bond energy as well as force constant increase
B. As bond energy increases, bond length decreases and force constant increases
C. As bond length increases bond energy decreases and force constant also
decreases
D. As force constant decreases, bond length decreases and bond energy increases
A:-A and C are false
B:-A and D are false
C:-A and B are false
D:-All statements are false
Correct Answer:- Option-B