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(Please write your Roll No. immediately)

Roll No. ..................................

End-Term Examination

First Semester [B.Tech] - December 2003

Paper Code : ETCH – 105 Subject : Applied Chemistry-I

Time : 3 Hours

Maximum Marks : 75

Note : Attempt any 5 questions in all.

Q1

( a )

Define carbonate and non-carbonate hardness of water. List the various disadvantages of hard water for domestic use.

3

( b )

Discuss the ION EXCHANGE PROCESS for water softening.

8

( c )

What do you understand with the priming and foaming problem in boilers?

4

Q2

( a )

Describe the carbonate and phosphate conditioning of water to overcome the boiler feed problem.

7

( b )

Calculate the amount of lime and soda required for the chemical treatment of water containing : Ca2+ = 80 ppm; Mg2+ = 36 ppm; K+ = 39 ppm; HCO3- = 244 ppm; FeSO4.7H2O added as coagulant = 69.5 ppm.

8

Q3

( a )

Define gross and net calorific values of fuels.

3

( b )

Discuss the method of calorific value determination by BOMB's calorimeter.

8

( c )

Calculate the weight and volume of air required for the combustion of 3 Kg of carbon.

4

Q4

( a )

Describe the fractional distillation of petroleum.

5

( b )

What do you understand with the knocking of a fuel? Report ways to improve the anti knocking characteristics of a fuel.

5

( c )

Write about the production and applications of WATER GAS.

5

Q5

( a )

Explain the colors in the compound of the following:

(i) Mn2+ (ii) Cr3+ (iii) Zn2+

3

( b )

Describe the CRYSTAL FIELD THEORY for the octahedral complexes of transition metals.

8

( c )

Report the magnetic behavior of any two of the complex ions:

(i) [Cu(NH3)4]2+ (ii) [Fe(CN)6]3- (iii) [Ni(H2O)6]2+

4

Q6

( a )

Define the term polymer with suitable examples.

2

( b )

Differentiate ORGANIC and INORGANIC polymers.

5

( c )

What are phosphazenes? Give a method of preparation, structure and properties of a phosphazene.

8

Q7

( a )

Define Ideal and Non-Ideal solutions.

4

( b )

Write about the distillation of a binary solution.

7

( c )

What is Nernst Distribution Law? Give its applications.

4

Q8


Write short notes on ANY FIVE of the following:

5x3

(a)

Lime Soda Process


(b)

Special behavior of strong electrolytes


(c)

Nuclear Fission


(d)

Henry's Law


(e)

Metallurgical Coke


(f)

Polysiloxanes


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