BT-101 (GS) – Engineering Chemistry
• Attempt any five questions.
• All questions carry equal marks.
a)Unit 2Discuss the zeolite process for softening of water.
Discuss the zeolite process for softening of water.
b)Unit 1100 ml of a water sample required 18 ml of standard EDTA solution. 20 ml of standard CaCO3 (15g/L) solution required 25 ml of EDTA solution. 100 ml of the sample after boiling required 12 ml of EDTA solution. Calculate the temporary and permanent hardness of the sample.
100 ml of a water sample required 18 ml of standard EDTA solution. 20 ml of standard CaCO3 (15g/L) solution required 25 ml of EDTA solution. 100 ml of the sample after boiling required 12 ml of EDTA solution. Calculate the temporary and permanent hardness of the sample.
a)Unit 2How is water softened by the lime-soda process? What are its advantages?
How is water softened by the lime-soda process? What are its advantages?
b)Unit 2Give a detailed account on the following.
i) Caustic embrittlement
ii) Boiler corrosion
Give a detailed account on the following.
i) Caustic embrittlement
ii) Boiler corrosion
Unit 3What is Lubricant? With the help of neat diagrams, explain the following criteria of lubricants:
i) Viscosity index
ii) Flash and fire point
What is Lubricant? With the help of neat diagrams, explain the following criteria of lubricants:
i) Viscosity index
ii) Flash and fire point
a)Unit 4Explain the preparation, properties and uses of Bakelite.
Explain the preparation, properties and uses of Bakelite.
b)Unit 4Write a short note on synthetic rubber with a suitable example.
Write a short note on synthetic rubber with a suitable example.
a)Unit 5What is meant by a phase diagram? Explain two-component system by taking Cu-Ag system as an example.
What is meant by a phase diagram? Explain two-component system by taking Cu-Ag system as an example.
b)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?
a)Unit 6State and explain beer-Lambert's Law.
State and explain beer-Lambert's Law.
b)Unit 6Define the following terms:
i) Bathochromic shift
ii) Hypsochromic shift
iii) Hyperchromic shift
iv) Chomophore
Define the following terms:
i) Bathochromic shift
ii) Hypsochromic shift
iii) Hyperchromic shift
iv) Chomophore
Unit 7What is periodic Table? Write trends of following in a group and in a period giving suitable reason:
i) Ionic size
ii) Electro negativity
iii) Electro affinity
What is periodic Table? Write trends of following in a group and in a period giving suitable reason:
i) Ionic size
ii) Electro negativity
iii) Electro affinity
Unit 1, Unit 2, Unit 5, Unit 4Write brief note on (Any two)
i) Alkalinity
ii) Scales and sludge's
iii) Triple point
iv) Urea-formaldehyde
Write brief note on (Any two)
i) Alkalinity
ii) Scales and sludge's
iii) Triple point
iv) Urea-formaldehyde