MHT-CET Chemistry · Teaching notes
Green Chemistry and Nanochemistry — MHT-CET Chemistry
Green Chemistry and Nanochemistry is the most recall-heavy chapter in MHT-CET Chemistry: none of its thirty-three past-year questions is HARD, and only the atom-economy sums need any working. The rest is two short lists to know by heart — the principles of green chemistry, and how nanostructures are classified, made and measured. Every PYQ is tagged.
Every subtopic, worked example, formula and trap in one printable document — answers shown, ready to share.
Subtopic notes
Green Chemistry: the Principles, Atom Economy and Safer Solvents
19 PYQsGreen chemistry designs processes that make less waste: its twelve principles favour prevention over clean-up, high atom economy, renewable feedstocks, fewer derivatives and safer solvents such as water and supercritical CO₂.
Nanochemistry: Dimensions, Sol–Gel Synthesis and Characterisation
14 PYQsA nanomaterial has at least one dimension between 1 and 100 nm; it is classed by how many of its dimensions lie OUTSIDE that range, made by the sol–gel route, and identified with UV-visible, FTIR, XRD, SEM and TEM.
Formula & revision sheet
1 formulas · 4 reference tables · 4 gotchas across all subtopics — the exam-eve cheat-sheet
Formula & revision sheet
1 formulas · 4 reference tables · 4 gotchas across all subtopics — the exam-eve cheat-sheet
Formulas (1)
Reference tables (2)
The Principles of Green Chemistry6 rows
| Statement | Verdict |
|---|---|
| Maximum use of auxiliary substances | Not a principleQ |
| Protection and deprotection is good practice | Not true — reduce derivativesQ |
| Good atom economy = few reactant atoms in the product | Not true — it means mostQ |
| Plant-based chemicals | Use of renewable feedstocksQ |
| Avoid protecting a group | Reduce derivativesQ |
| Adipic acid by enzymes (Draths and Frost) | From glucoseQ |
Watch out for (2)
- Blaming two gases when one explains everything→ The Principles of Green Chemistry
- Leaving a reactant out of the sum→ Percentage Atom Economy
Reference tables (2)
Watch out for (2)
- Nano-rings as one-dimensional→ Classifying Nanostructures by Dimension
- Drying as the last step→ Sol–Gel Synthesis and the Characterisation Techniques
PYQ weightage by concept
5 concepts · 33 PYQs — where the marks actually sit, so you know what to drill first
PYQ weightage by concept
5 concepts · 33 PYQs — where the marks actually sit, so you know what to drill first
| Concept | PYQs | Share |
|---|---|---|
| The Principles of Green Chemistry | 8 | 24% |
| Percentage Atom Economy | 6 | 18% |
| Green Solvents and Plant-Derived Compounds | 5 | 15% |
| Concept | PYQs | Share |
|---|---|---|
| Classifying Nanostructures by Dimension | 8 | 24% |
| Sol–Gel Synthesis and the Characterisation Techniques | 6 | 18% |
Test yourself on Green Chemistry and Nanochemistry
15 past MHT-CET questions from this chapter, timed at 14 minutes and marked the way the exam marks it. You see your score and every answer the moment you finish. Free to start.