Q.1
14 Marks(a)
Define: Nano Science, Quantum dot, Grain boundary
(b)
Justify why melting point is size dependent property?
(c)
Explain in detail Top Down and Bottom up approach for synthesis of naomaterial.
Gujarat Technological UniversitySummer 2025 examination
GTU 3170509 Nanoscience and Technology Summer 2025 Question Paper & PDF
B.E. · Chemical Engineering · Semester 7 · Subject code 3170509
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 2:30 PM – 5:00 PM
- Questions
- 5 with internal choice
No solutions on this paper yetNeed them for your exam? Ask once. Papers that students ask for are solved first, and we aim to add them within 24 hours.
Noted. This paper is in our queue now. Check back tomorrow.
We could not record that here. Email the paper name to hirenjsca@gmail.com and we will add it.
Q.2
14 Marks(a)
Briefly discuss the effect of size reduction on diffusivity.
(b)
Differentiate Evaporation and Sputtering.
(c)
Explain in detail Sol gel process for synthesis of nanoparticles.
OR
(c)
Differentiate SEM and TEM for characterization of nanoparticles.
Q.3
14 Marks(a)
Classify Micelle.
(b)
What factors influence the stability of an emulsion, and how can emulsifiers be used to improve stability?
(c)
How does temperature affect the mechanical attrition process? Should the mill be operated under cryogenic conditions for certain materials?
OR
(a)
Explain colloid.
(b)
What are the mechanisms of flocculation and deflocculation in colloidal systems, and how can they be controlled?
(c)
Explain in detail the mechanism of nano-crystallization during high-energy ball milling.
Q.4
14 Marks(a)
What is X-ray diffraction, and how does it work?
(b)
What are examples of reversible and irreversible self-assembly systems?
(c)
What are the thermodynamic and kinetic factors that influence crystal growth?
OR
(a)
How do CNTs act as effective adsorbents for water purification and pollutant removal?
(b)
Why is catalysis using micelles as “micro reactors” advantageous sometimes? When is it advantageous ?
(c)
Compare Atomic Force Microscopy and other imaging techniques.
Q.5
14 Marks(a)
List out the applications of nanotechnology in Fuel cells.
(b)
Discuss the DNA self assembly structure.
(c)
Explain principal, working, construction and application of the Dynamic light Scattering.
OR
(a)
List out the applications of Gold nanoparticles.
(b)
What is the primary safety concerns associated with the handling of nano materials?
(c)
How does the surface area-to-volume ratio change as materials are reduced to the nanoscale, and why is this significant?
More Nanoscience and Technology papers
Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.
Other Semester 7 subjects
BE Chemical
Preparing with friends?
Send this paper to your class group. Every question has its own link.
About this paper
Official Gujarat Technological University (GTU) examination paper for Nanoscience and Technology (Summer 2025, B.E. · Chemical Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.