B.Sc. II (Semester III) (Entrepreneurship) (CGPA Pattern)
Examination, 2018
industrial chemistry
Paper III (Analytical and Industrial Aspects of Inorganic Chemistry)
Day and Date Thursday, 26-4-2018 Total Marks 70
Time 2.30 p.m. to 5.00 p.m.
N.B. All questions are compulsory.
ii) Draw neat labeled diagrams and write equations wherever
necessary.
iii) Figures to the right indicate full marks.
1. Select the most correct alternative for each of the following and rewrite the
sentences 14
Ionic theory of acid-base indicator was proposed by
Pauling Whitney Faraday Ostwald
ii) Particle size of precipitate is smallest.
Crystalline Amorphous
Gel Solid
iii) The substance which increases the rate of reaction is called
catalyst.
retarder positive negative promoter
iv) In manufacture of sulphuric acid by contact process temperature range is
°C.
400-450 500-600 200-250 None of these
Passivity is the phenomena.
Surface Internal Collective Inorganic
vi) Phenolphthalein has the colour change interval pH.
3.5-6.1 8.6-10.6 4-6 11-13
vii) Nucleation is step of precipitation.
Final Internal Initial Last
viii) catalyst used in the hydrogenation of oil.
Sodium Iron
Platinum Nickel
ix) Previously Sulphuric acid was manufactured by process.
Contact Haber's
Solvay Lead chember
is the process of protection of metals from corrosion.
Heating Hammering
Galvanizing Forming
xi) Eriochrome Black-T is indicator.
acid-base indicator metallochromic
acidic basic
xii) Increase in temperature decreases the extent of
co-precipitation nucleation
post-precipitation all of these
xiii) increases the efficiency of catalyst.
Retarder Promoter
Initiator Temperature
xiv) The chemicals which induce the passivity in metals are called
Accelerator Preventers
Passivators All of these
2. Solve any seven of the following 14
Define primary standard with example.
ii) What is meant by equivalence point and end point
iii) What is meant by post-precipitation
iv) Define organic precipitant.
Define acid-base catalysis with suitable example.
vi) Give the reactions involved in manufacture of sulphuric acid by contact
process.
vii) State Le-Chatelier's Principle.
viii) Give the applications of passivity.
ix) What is meant by catalytic poison
3. Solve any two of the following 10
Discuss the colour change interval of an indicator.
ii) Draw the labeled diagram for manufacture H2SO4 by contact process.
iii) Write a note on electrochemical theory of corrosion.
How do you classify the catalytic reactions 4
4. Solve any two of the following 14
What are the types of acid-base titrations Explain the choice of indicator
with the help of nutralisation curve for strong acid against weak base.
ii) What are the conditions for good precipitation
iii) Discuss in detail modern theory of catalysis.
5. Solve any two of the following 14
Discuss the effects of moisture and oxygen on the process of corrosion.
ii) Discuss in detail, manufacture of ammonia by Haber's process.
iii) Write the characteristics of catalysts.