Kerala PSC Previous Years Question Paper & Answer
Page:13
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Higher Secondary School Teacher Chemistry (SR for ST)' And exam conducted in the year 2024. And Question paper code was '007/2024/OL'. 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.
Correct Answer:- Option-A
Question62:-The point groups of the molecules 2F; and vF; are
A:-C3v and Dh respectively
B:-Dsh and cw respectively
C:-both cw respectively
D:-both D;: respectively
Correct Answer:- Option-B
Question63:-The selection rules for hyperfine transition in ESR spectroscopy are
A:-An.=+1 and سح رھ +1
1+عی.ہ۵-:5 8001 ൧൩൭50
ಲ;-ಗಿಗ,ಎ0 8೧೮ ൧൩൭൦2
0:07 = 1 210 ^= -1
Correct Answer:- Option-B
Question64:-Which of the following is an efficient technique for liquid-liquid
extraction?
A:-Thermogravimetry
B:-Craig method
C:-Chromatography
D:-Sonication
Correct Answer:- Option-B
Question65:-Which crown ether exhibits affinity for potassium ion?
A:-18-Crown-6
B:-15-Crown-4
C:-12-Crown-4
D:-15-Crown-5
Correct Answer:- Option-A
Question66:-Which are the common thermal analytical methods widely used to
investigate polymers?
A:-DTA and GC
B:-TG and DSC
C:-TLC and HPLC
D:-None of the above
Correct Answer:- Option-B
Question67:-When a solid solute is added to a solid solvent, which is the observed
colligative property?
A:-Elevation in boiling point
B:-Lowering of vapour pressure