Download JNTUA B.Tech 1-1 R19 2020 January 19A51101T Engineering Chemistry Question Paper

Download JNTUA (JNTU Anantapur) B.Tech R19 (Bachelor of Technology) 1st Year 1st Semester (1-1) 2020 January 19A51101T Engineering Chemistry Previous Question Paper || Download B-Tech 1st Year 1st Sem 19A51101T Engineering Chemistry Question Paper || JNTU Anantapur B.Tech 1-1 Previous Question Paper || JNTU Anantapur B.Tech ME 1-1 Previous Question Paper || JNTU Anantapur B.Tech CSE 1-1 Previous Question Paper || JNTU Anantapur B.Tech Mech 1-1 Previous Question Paper || JNTU Anantapur B.Tech EEE 1-1 Previous Question Paper || JNTU Anantapur B.Tech ECE 1-1 Previous Question Paper

Code: 19A51101T


B.Tech I Year I Semester (R19) Regular Examinations January 2020
ENGINEERING CHEMISTRY
(Mechanical Engineering)

Time: 3 hours Max. Marks: 70

PART ? A
(Compulsory Question)

*****
1 Answer the following: (10 X 02 = 20 Marks)
(a) What is meant by a soft water and hard water?
(b) How is the exhausted zeolite softener bed regenerated?
(c) Write a short note on corrosion.
(d) Write about the primary cells?
(e) What are polymers? Give suitable examples?
(f) Why is Bakelite a thermosetting polymer?
(g) What are lubricants? Give one example.
(h) What is building materials?
(i) Explain the terms sorption and desorption.
(j) Why does a gas mixed with another gas not form a colloidal system?

PART ? B
(Answer all five units, 5 X 10 = 50 Marks)

UNIT ? I

2 What are boiler troubles? Explain in detail.
OR
3 Explain about Ion-Exchange process with neat diagram.

UNIT ? II

4 (a) Explain about the factors affecting the corrosion.
(b) Write a note on differences between a cell & battery.
OR
5 (a) What are the basic principles of fuel cells?
(b) Write a short note on Galvanic corrosion.

UNIT ? III

6 (a) What are thermosetting & thermoplastic polymers? Give examples for each one.
(b) Write about applications of PVC & Bakelite.
OR
7 (a) What are elastomers? Describe their properties?
(b) Discuss about mechanism of chain growth.

UNIT ? IV

8 (a) Write about properties of lubricating oils and its applications.
(b) Write a short note on reinforced composites.
OR
9 (a) Explain setting and hardening of cement.
(b) Write a note on applications of refractories.

UNIT ? V

10 (a) Explain about chemical and electrochemical methods of nanomaterials.
(b) Write a short note on micelle formation.
OR
11 (a) Discuss about synthesis of colloids.
(b) Write a short note on solid-gas interface.
*****
R19
FirstRanker.com - FirstRanker's Choice