some important topic for chemistry
module 1
State & explain Nernst equation? (KTU DEC 2015,2017)
What is meant by single electrode potential? MAY2019
Explain Helmholtz double layer? MAY2019
How will you determine the pH of a solution using glass electrode? ( KTU MAY,2018,DEC2018)
Explain the construction of Li-Ion cell?
Explain different types of electrodes?(KTU 2019,2018,DEC2018)
Explain potentiometric titration?
Explain the process involved in H2-02 fuel cell? (KTU MAY 2016,DEC2017)
Explain the process involved in calomel electrode and SHE? (KTU 2016,2017)
Briefly explain the variation of emf with temperature?
How will you measure the conductivity of a solution?
Distinguish between electro chemical series and galvanic series?
Briefly explain Copper and Nickel plating?
Explain the mechanism of electro chemical corrosion?
What is advantageous galvanic series? How is galvanic series overelectrochemical series in corrosion chemistry?
Why full charging is not allowed in Li-ion cell?
Derive Nernst equation and apply it for the emf of Daniel cell.
How is electroless nickel plating done? Write the reactions involved. Give anytwo applications of it.
With the help of electrochemical equations, show that rusting of iron is more severe in oxygen rich acidic medium than alkaline medium.
A glass electrode- calomel electrode assembly shows an emf of \overline{212~mV} with pH=4 buffer solution and -30mV with DH=9.2 buffer solution. Find the pH of the test solution if it shows an emf of 120 mV. Also find E^{0}c if E_{SCE}=0.2422~V
module 2
Distinguish between absorption spectrum & emission spectrum?
State and explain Beer Lamberts law? (KTU 2016,2017)
What are different types of electronic transitions are possible in UV- Visible spectroscopy?
Give the applications of UV visible spectroscopy?(KTU DEC 2015,2017)
Explain the various modes of vibration possible for CO2, which of them are IR active(KTU MAY2018,DEC2018
Explain the various modes of vibration possible for H2O, which of them are IR active?
Give the mechanism of interaction of electromagnetic radiation with oscillating dipole of a molecule? (KTU DEC2018)
Write the basic principle of MRI imaging? Explain the process in NMR? Write the basic principle of IR spectroscopy ? (KTU MAY 2017,2018,DEC2018)
The vibrational frequency of HCl molecule is 2886cm-1.Calcualte the force constant if the reduced mass is 1.63x 10-37 Kg.? (KTU DEC2017)
CHCl3 gives a singlet at 7.26 ppm, while CH3Cl shows singlet at 3.06 ppm in the 'H NMR spectrum. Give reason. (KTU, DEC 2020)
Explain the reason for broadening of UV-Visible (electronic) spectrum. (KTU,JULY 2021)
Explain the origin of spin-spin splitting and draw the splitting pattern in CH3-CH2-CH2-CI. (KTU, DEC 2020)
Discuss the principle of IR spectroscopy. Arrive at the expression for vibrationalenergy states of a diatomic molecule. Draw the potential energy diagram. (KTU, JULY 2021)
Draw the molecular orbital energy diagram of i) Ethene, ii) 1, 3- butadiene iii)1,3,5 hexatriene and iv) benzene to explain their UV-Vis absorption(KTU, DEC 2020)
An organic compound C3H6O contains a carbonyl group. How will
module 3
Explain the principles of HPLC? (KTU MAY 2019,2018,DEC2018)
Distinguish between TGA & DTA? (KTU MAY 2016,2018,DEC2018)
Explain the various methods of thermal analysis ?(KTU MAY2018,DEC2018)
Discuss principles & applications of gas chromatography? (KTU MAY2015,DEC2015,2018)
Explain the process TLC? (KTU DEC2018)
Give the principle of column chromatography? List the various steps involved in it? (KTU MAY 2019,2018)
Explain the major differences between GC & HPLC? (KTU DEC2018)
Explain the decomposition of hydrated Calcium Oxalate? (KTU DEC2016)
Explain the advantages of differential thermal analysis? (KTU MAY2018,DEC2018)
Explain the term 'retention factor'? (KTU MAY 2018)
Write note on nano material? (KTU MAY 2019,2018,DEC2018)
Give the applications of nano materials? (KTU MAY2018,DEC2018)
What are fullerene?
Write note on sol gel process? (KTU MAY 2016,DEC2017)
Briefly explain the principle and characterisation of SEM?
Write any three applications of TGA(KTU,JULY 2021)
Explain the terms retention time (tr) and relative peak area (RPA) in GC. (KTU, DEC 2020)
Discuss the principle and procedure in column chromatography.
Explain howTLC is useful in checking the purity of each fraction. (KTU, JULY 2021)
Sketch the Derivative TG graph of Calcium oxalate monohydrate(KTU, DEC 2020)
Explain the various chemical methods used for the synthesis of nanomaterials. (KTU, JULY 2021)
Explain the experimental procedure of TLC(KTU, DEC 2020)
module 4
Explain the different classifications of polymers?
What are co-polymers? Explain the properties of random,alternating, block and graft polymer?
Give the applications of conducting polymers? Explain the preparation properties of Poly pyrrole, poly aniline? (KTU MAY 2016,DEC2017)
Explain the structure of OLED? (KTU MAY2018,DEC2018)
Explain various types of isomerism?
Explain the Newman configuration of methane and ethane?
Explain Sawhorse representation of methane and ethane?
Briefly explain the rules and examples of RS notation
Define the term chirality?
Differences between enantiomers and diastereo isomers
Draw the conformational analysis of ethane,butane.cyclo hexane,
Explain the preparation and structure of Kevlar? 2016,DEC2017) (KTU MAY
Draw the Fischer projection formula for the meso form of the following andconvert it into Saw-Horse structure. C6H5-CH(Cl)-CH(CI)- C6H5(KTU, JULY 2020)
Write the synthesis of polypyrrole. (KTU, DEC 2021)
How many optical isomers are possible for H3C-CH(OH)-CH(OH)- CHO? Draw the Fischer projection formula of all the isomers. Which among them are opticallyactive(KTU, DEC 2020)
What are OLEDs? Give the construction and working. (KTU, JULY 2020)
What is meant by structural isomerism? What are the different types of structuralisomerism in organic molecules? Explain with examples. (KTU, DEC 2021)
Write the structure of ABS and its monomers. Also list any two applications ofABS. (KTU, DEC 2020)
module 5
What is hard water? What are the different units in which hardness is expressed? (KTU MAY 2016,2018,DEC2018)
Describe EDTA method for the estimation of hardness? (KTU MAY 2016,DEC2017)
How are ion exchange resins useful in removing hardness?
Explain reverse osmosis process? (KTU MAY 2016,2018,DEC2018)
Explain with flow chart, how water is purified for drinking purposes? MAY2019
Explain trickling filter method for water purification??
Explain the process chlorination?
Explain BOD & COD ? (KTU MAY 2016,DEC2017) Explain UASB process? (KTU MAY2018,DEC2018)
Write a note on aerobic & anaerobic waste water treatment (KTU, DEC 2020)
Which buffer is used in EDTA method? What is its role in titration?
Which buffer is used in EDTA method? What is its role in titration? (KTU, JULY 2020)
Explain break point of chlorination. (KTU, DEC 2021)
Explain trickling filter and UASB processes in waste water treatment. (KTU, JULY 2020)
Discuss the procedure for the determination of DO in water. (KTU, DEC 2020)
Define reverse osmosis. Explain the method for the desalination of water usingreverse osmosis. Give its advantages. (KTU, JULY2020)
Explain the ion exchange process in water treatment. How is the exhausted resinregenerated? (KTU, JULY 2021)
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