10009 ॥॥॥॥॥॥॥॥

SECOND SEMESTER B.TECH. DEGREE EXAMINATION, MAY/JUNE 2016
Course Code : CY100
Course Name : ENGINEERING CHEMISTRY

Max. Marks : 100 Duration : 3 Hours

PART—A

Answerall questions, each question carries 2 marks.

3:

പ ര. ॐ

Which of the following nuclei can give NMR spectrum ? Give reason.
a) ॥1 ०) Pc c) YF d) FO

. At25°C the standard emf of a cell having reaction involving two electron charge

is found to be 0.295 V. Calculate the equilibrium constant of the reaction.

The specific conductivity of N/50 KCI solution at 25°C is 0.0002765 ہ٥۳‎ भा 1.
If the resistance of the cell containing this solution is 500 ohm, what is the cell
constant ?

What are co-polymers ? Give an example.

Distinguish between gross and net calorific values of fuel.

What is meant by cetane value of a diesel fuel ?

. Hard water will not give a ready lather with soap solution. Give the chemical

explanation.

Why do we express hardness of water in terms of CaCO, equivalent ?
(8x2=16 Marks)

PART-B

Answer all questions, each question carries 3 marks.

9.

The vibrational frequency of HCI molecule is 2886017771. Calculate the force
constant of the molecule. Reduced mass of HCI is 1.63 x 10-27 kg.