PTU B.Tech Electrical 1st Year Paper 2012 Engineering Chemistry Punjab Technical University Exam 2012 1st Year Engineering Chemistry Test September and March Question Paper Free Download Punjab Technical University Engineering Chemistry Question Papers 2012 PTU B.Tech Electrical 1st Year Question Paper 2012 for all students Previous Year old Past Papers of PTU B.Tech Electrical 1st Year Paper 2012 Engineering Chemistry Punjab Technical University September 2012 and March 2012 Exam B.Tech Electrical 1st Year Sample Model Question Papers Free Download PDF
a) Iron does not rust when zinc coating is broken in a galvanized iron pipe but rusting occurs if a coating of tin over iron is broken. Why?
b) What is calgon conditioning of boiler feed water?
c) What is the importance of IR spectroscopy in finger print region?
d) Why is TMS used as an internal standard in NMR spectroscopy?
e) What is chemiluminescence? Give examples.
f) What are eutectics? Give an example.
g) The standard EMF of the Daniell cell involving cell reaction Zn(s) + Cu2(aq) Zn2(aq.) + Cu(s) is 1.10 volts. Calculate the equilibrium constant of the cell reaction at 25°C.
h) What is Rf value in chromatography?
i) Why does hard water consumes a lot of soap?
j) Why are electronic absorption bands generally broad as compared to infra red?
PTU B.Tech Electrical 1st Year Paper 2012 Engineering Chemistry