BT-101 (GS) – Engineering Chemistry

Explain the formation and composition of scales in boilers. How are they different from sludge's? What are bad affects?

A water sample contains the following impurities per liter: CaCl2 = 222 mg; Mg(HCO3)2 = 73 mg; CaSO4 = 6.8 mg; NaCl = 58.5 mg; Ca(NO3)2 = 162 mg and MgSO4 = 73 mg. The sample of lime available is 74% pure and soda is 90% pure. 20% excess chemicals have to be added. Calculate the amount lime and soda required for the treatment of 10000 liters of water.

Explain the hot lime-soda process. What are its advantages?

Write a note on ion-exchange process.

Describe the mechanism of lubrication that is applied to delicate instruments.

Explain about aniline point and saponification Number.

Write a short note on the following:

i) Functionality

ii) Free radical chain polymerization

iii) Ionic polymerization

Write a note on preparation, properties and uses of the following:

i) Phenol-formaldehyde resin

ii) Buna-S

Describe the following with suitable examples: Chemical corrosion and Electro chemical corrosion

Describe the following with suitable examples: Phase diagram of one-component water system.

Discuss principle, instrumentation and applications of vibrational and rotational spectroscopy.

How do you explain electro negativity, ionic sizes and electron affinity of s, p-block elements?

State and explain Beer-Lambert's Law.

Write brief note on (Any two):

i) Eutectic point

ii) Flash point & Fire point

iii) Caustic Embrittlement

iv) Polarizability