Kerala PSC Previous Years Question Paper & Answer
Page:12
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Higher Secondary School Teacher (Junior) Chemistry' And exam conducted in the year 2023. And Question paper code was '033/2023/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.
Question54:-Calculate the free energy change during the isothermal reversible
expansion of one mole of an ideal gas at 300 K from 25 litres to 250 litres.
A:-1382 cals
B:-— 1382 cals
C:-2345 cals
D:-— 2345 cals
Correct Answer:- Option-B
Question55:-The boiling point of a normal liquid is 85°C, its molar enthalpy of
vapourisation is if its molar entropy of vapourisation is 21 cal/mol.
A:-6521 cal/mol
B:-2341 cal/mol
C:-- 2341 cal/mol
D:-7518 cal/mol
Correct Answer:- Option-D
Question56:-Fermi Dirac statistics applied to
A:-Photons
B:-Molecules
C:-Electrons
D:-All of the above
Correct Answer:- Option-C
Question57:-State which of the following statements are correct
A:-Indistinguishable identical particles with 0 or integral spin are governed by
Pauli's Exclusion Principle
B:-Indistinguishable identical particles with half integral spin follows Fermi
Dirac Statistics
C:-Distinguishable identical particles follow Bose Einstein Statistics
D:-None of the above
Correct Answer:- Option-B
Question58:-The standard deviation for the following results of lead content in blood
samples. 0.752, 0.756, 0.752, 0.751 and 0.760 ppm lead is
A:-0.0037 ppm Pb
B:-0.0370 ppm Pb
C:-0.0450 ppm Pb
D:-0.8430 ppm Pb
Correct Answer:- Option-A
Question59:-Identify a redox indicator from the below given reagents
A:-Ferroin