PART A
UNIT I - ELECTROCHEMISTRY
1. What are the types
of electrolytes? Give an example for each type.
2. What is the
difference between metallic and electrolytic conduction?
3. What are single
and Std. Electrode potentials?
4. What is Nernst
equation? Discuss the terms involved.
5. Calculate the
electrode potential of Zinc electrode dipped in 0.1M zinc
sulphate solution at
250 C.
6. Bring out the
symbolic representation of SHE. What are its limitations?
7. What are secondary
reference electrodes? Discuss about a calomel electrode.
8. Give the symbol,
diagram and reactions of a calomel electrode.
9. Define emf series.
Bring out any four elements and their E0 values.
10. How will you
predict the spontaneity of a reaction using emf series?
11. Zinc displaces H2
from HCl but Cu does not. Why?
12. What is galvanic
series? What are the significance of it?
13. Discuss the rules
to be followed while representing a cell.
14. What is the
difference between electrochemical and electrolytic cells?
15. What is
potentiometric titration?
16. What is
conductometric titration?
17. What is standard
electrode?
18. Define ion
selective electrodes?
19. What are the
conditions for a cell to be a reversible one?
20. Differentiate
electrolytic and electrochemical cell.
UNIT – II CORROSION AND ITS CONTROL
1. Define corrosion
2. Why do metals
undergo corrosion?
3. What are the types
of corrosion?
4. What are the
consequences of corrosion?
5. What is Pilling
bedworth rule?
6. What is H2
embrittlement?
7. Write the
elemental reactions involved during electrochemical corrosion.
8. What type of
corrosion takes place when a Zinc rod dipped in HCl solution?
9. What is galvanic
corrosion? Discuss
10. What is pitting
corrosion? Why is it severe?
11. Differentiate
chemical and electrochemical corrosion
12. How does purity
of a metal influence corrosion?
13. How do pH of the
environment affect corrosion of a metal?
14. How is corrosion
minimized by proper designing of equipment?
15. What is cathodic
protection? Discuss
21. What is the
purpose of using Mg bars in ships?
22. What is the role
of hydrazine and sodium sulphite in corrosion control?
23. What are anodic
inhibitors? Give any two examples with the mode of action
24. What are vapour
phase inhibitors? Give an example.
25. Define a paint.
26. What is the role
of drying oil in a paint? Discuss
27. What are
plasticisers? Give examples.
28. What are acid
pickling and alkali cleaning?
29. What is
electroless plating?
30. What are the
constituents of electrolytic bath used for electroless plating?
31. Bring out the
reactions taking place during electroless plating
32. What are the
advantages of electroless plating?
UNIT III - PHASE RULE AND ALLOYS
1. State phase rule
2. Define phase.
3. What is meant by
the term component?
4. Define degree of
freedom.
5. A system consists
of benzene and water. What is the number of phases?
6. A gaseous mixture
consists of N 2, H2 and NH3 in equilibrium. What is the
number of
phases?
7. How many
components are present when NH4Cl is heated in a closed vessel?
8. A gaseous mixture
contains NH3 , HCl in the molar ratio of 1:2. Whatr is the
number of
components of the
system?
9. Give the number of
components of the system:
(i) Fe (s) + H2O(g) à
FeO(s) + H2 (g)
(ii) CaCO3(s)
<=> CaO(s) + CO2(g)
10. What is invariant
system?
11. Give an example
for invariant system.
12. Calculate the
number of phases present in the systems:
(i) MgCO3(s)
<=> MgO (s) + CO2(g)
(ii) Rhombic
sulphur(s) <=> Monoclinic sulphur(s)
(iii)NH 4Cl(s)
<=> H3(g) + HCl(g)
(iv) I2(s) <=>
I2(g)
(v) Ice(s) <=> water(l)
<=> Water vapour(g)
13. What is the
degree of freedom of the following systems?
(i ) NaCl (s)
<=> NaCl-water(aq) <=> Water-vapour(g)
(ii) A gas in
equilibrium with its solution in a liquid.
(iii) A solution of a
solid in a liquid in equilibrium with solvent vapour.
(iv) Two partially
misicible liquids in the absence of vapour.
(v) I2(s) <=>
I2(g)
14. What is condensed
phase rule? What is the number of degrees of freedom at
the eutectic
point for a two
component system?
15. What is thermal
analysis. Draw the cooling curves of a pure substance and a
mixture and
discuss.
16. What is the
effect of pressure on the melting point of ice?
17. What is
metastable equilibrium?
18. What is triple
point?
19. What is eutectic
composition of lead-silver system?
20. Discuss the
significance of eutectics.
21. What is meant by
congruent melting point?
22. How many phases
and components are existing at triple point in ice – water
– water vapour
system.
23. State the
conditions under which two substances can form a simple eutectic.
24. Define eutectic
point.
25. Eutectic is a
mixture and not a compound explain.
26. What is eutectic
alloy?
27. Mention some
important properties of alloys.
28. What are
Stainless steels?
29. What are solders?
30. What is meant by
phase diagram? With the help of phase diagrams explain
the following
terms. (i) meta state
equilibrium (ii) Eutectic point.
31. Explain the
differences among melting point, eutectic point and triple point.
Give examples.
32. PCl5 (s) à PCl3
(l) + Cl2 (g) . Write the number of phases, components
and degree of freedom
for this system.
33. Mention the
merits and demerits of phase rule.
34. What are the main
purpose of alloying steel.
35. Give the
composition of Nichrome and Alnico.
36. What is 18/8
Stainless Steel.
37. What is the basic
differences between brass and bronze?
38. What are solders?
Give examples.
UNIT IV : FUELS AND COMBUSTION
1. What is coal? How
is it formed?
2. Name the different
varieties of coal.
3. What is calorific
value? Mention its units.
4. Define GCV and LCV
of a fuel.
5. What is meant by
the term fixed carbon?
6. How is coke
superior to coal?
7. Distinguish
between proximate and ultimate analysis of coal.
8. Give the
characteristics of metallurgical coke.
9. What is meant by
hydrogenation of coal?
10. Define octane
number.
11. How will you
improve the octane number?
12. What is leaded
petrol? Mention its advantages and disadvantages.
13. Define cetane
number.
14. How is cetane
number improved?
15. Distinguish
between petrol and diesel.
16. What is aviation
gasoline? How is it obtained?
17. Give the
composition of water gas.
18. Write the
composition of producer gas.
19. Explain how water
gas is superior to producer gas.
20. What is flue gas?
21. Mention the uses
of flue gas analysis.
22. Name the reagents
used for absorbing CO2,CO and O2 during flue gas
analysis by Orsat
apparatus.
UNIT – V - ANALYTICAL TECHNIQUES
1. Explain emission
spectra.
2. What is an
absorption spectrum?
3. What are the
differences between molecular spectra and atomic spectra?
4. State
Beer-Lamberts law. Write its mathematical form.
5. What are the
limitations of Beer-Lamberts law?
6. What are the
sources of UV light in UV-Visible spectrophotometer.
7. What is a
colorimeter?
8. Mention the
important components of a colorimeter.
9. What are
applications of colorimetry?
10. Mention the
advantages of colorimetry.
11. What is flame
photometry? Name few metals which can be easily
detected by this
method.
12. What are the
important processes that occur in the flame emission
spectroscopy?
13. What are
chromophores? What are auxochromes? Give some examples.
14. Define
bathochromic shift and hypsochromic shift.
15. What is
hypochromic effect and hyperchromic effect?
16. How are IR
spectral range subdivided?
17. How will you
calculate the number of vibrational modes of a compound?
18. What is finger
print region? Mention its importance.
19. What is group
frequency region? Mention its importance.
20. Give any two
applications of UV spectroscopy.
PART B
UNIT – I ELECTROCHEMISTRY
1. Define EMF. How is
it determined?
2. Differentiate the
following ; a) Reversible and irreversible cells
b) Electrolytic and
electrochemical cells
3. Derive Nernst
equation? What are the applications?
4. With a neat sketch
explain the principle, working of SHE.
5. Explain the
concept of secondary reference electrode, taking calomel
electrode as example.
6. Justify the „V‟
shaped graph obtained from conductometric acid base
titrations.
7. Bring out the
significance of potentiometer titration in redox reactions.
8. What is the
procedure for determining the endpoint for a precipitation
reaction using
potentiometric
titrations?
9. What is EMF
series? What are the applications?
10. How will you
measure pH of a solution using ion selective glass electrodes?
UNIT II - CORROSION AND ITS INHIBITION
1. What are the
constituents of paints? Discuss the functions with examples.
2. Explain the
preparation of metals for coating
3. Discuss
electroless plating in detail taking Ni as example.
4. Explain the
mechanism of chemical corrosion
5. Explain the
mechanism of electrochemical corrosion
6. Discuss the
factors influencing corrosion
7. Explain the
corrosion control by proper selection of metal and designing.
8. Explain cathodic
protection in detail
9. What is
differential aeration corrosion? Explain with four examples.
10. Write briefly
about gold electroplating?
11. Compare different
types of corrosion inhibitors.
UNIT III - PHASE RULE AND ALLOYS
1. Draw a neat phase
diagram and explain the lead-silver system? Briefly
write
about Pattinson‟s
process.
2. Explain the
application phase rule to a one component system.
3. How will you
construct a phase diagram by thermal analysis?
4. Define phase rule
and condensed phase rule. Explain the terms involved.
5. Write note on heat
treatment of steel.
6. What are the non
ferrous alloys? Give their properties.
7. Define the term
“Alloy” and bring out the effect of alloying of metals
with examples.
8. Explain about stainless
steel.
UNIT IV : FUELS AND COMBUSTION
1. Describe proximate
analysis. What is the significance of it?
2. Bring out the
importance of ultimate analysis.
3. In what ways Otto
Hoffmann method is advantageous than the traditional
method. Explain
the various products
and the recovery process.
4. Explain synthesis
of petrol by Bergius process.
5. What is Fishcer
Tropsch process. What are the advantages of the process?
6. What is Knocking?
Explain about the mechanism of anti - knocking ?
7. What is Water gas?
How is it manufactured?
8. How is producer
gas manufactured? Give its composition and uses.
9. Write a brief note
on CNG and LPG.
10. Discuss the
points to be taken care in calculation of minimum air
requirement for the
complete combustion.
11. How is flue gas
analysed using Orsat‟s apparatus?
UNIT V - ANALYTICAL TECHNIQUES
1. Derive Beer –
Lamber‟s law. What are the reasons for the deviations from
Beer‟s law?
2. Explain
photoelectric colorimeter with suitable diagram.
3. Draw the schematic
diagram of a flame photometer and explain its working.
4. Explain the
working of atomic absorption spectrometer..How will you
determine nickel
using
AAS?
5. Give an account on
principle, application and intstrumentation of UV-Visible
spectroscopy.
6. Give an account on
principle, application and intstrumentation of IR
spectroscopy Explain
stretching and bending vibrations.