BT-101 (GS) – Engineering Chemistry
• Attempt any five questions.
• All questions carry equal marks.
a)Unit 2Explain the formation and composition of scales in boilers. How are they different from sludge's? What are bad affects?
Explain the formation and composition of scales in boilers. How are they different from sludge's? What are bad affects?
b)Unit 2A 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.
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.
a)Unit 2Explain the hot lime-soda process. What are its advantages?
Explain the hot lime-soda process. What are its advantages?
b)Unit 2Write a note on ion-exchange process.
Write a note on ion-exchange process.
a)Unit 3Describe the mechanism of lubrication that is applied to delicate instruments.
Describe the mechanism of lubrication that is applied to delicate instruments.
b)Unit 3Explain about aniline point and saponification Number.
Explain about aniline point and saponification Number.
a)Unit 4Write a short note on the following:
i) Functionality
ii) Free radical chain polymerization
iii) Ionic polymerization
Write a short note on the following:
i) Functionality
ii) Free radical chain polymerization
iii) Ionic polymerization
b)Unit 4Write a note on preparation, properties and uses of the following:
i) Phenol-formaldehyde resin
ii) Buna-S
Write a note on preparation, properties and uses of the following:
i) Phenol-formaldehyde resin
ii) Buna-S
i)Unit 5Describe the following with suitable examples: Chemical corrosion and Electro chemical corrosion
Describe the following with suitable examples: Chemical corrosion and Electro chemical corrosion
ii)Unit 5Describe the following with suitable examples: Phase diagram of one-component water system.
Describe the following with suitable examples: Phase diagram of one-component water system.
Unit 6Discuss principle, instrumentation and applications of vibrational and rotational spectroscopy.
Discuss principle, instrumentation and applications of vibrational and rotational spectroscopy.
a)Unit 7How do you explain electro negativity, ionic sizes and electron affinity of s, p-block elements?
How do you explain electro negativity, ionic sizes and electron affinity of s, p-block elements?
b)Unit 6State and explain Beer-Lambert's Law.
State and explain Beer-Lambert's Law.
Unit 5, Unit 3, Unit 2, Unit 7Write brief note on (Any two):
i) Eutectic point
ii) Flash point & Fire point
iii) Caustic Embrittlement
iv) Polarizability
Write brief note on (Any two):
i) Eutectic point
ii) Flash point & Fire point
iii) Caustic Embrittlement
iv) Polarizability