MHT-CET Chemistry · Formula sheet
Green Chemistry and Nanochemistry formulas
1 formula, 4 reference tables and 4 common traps for MHT-CET Chemistry Green Chemistry and Nanochemistry, grouped by subtopic.
Green Chemistry: the Principles, Atom Economy and Safer Solvents
Learn this subtopic in the notesPercentage Atom Economy
Atom economy
The Principles of Green Chemistry
| 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 |
Common traps
Blaming two gases when one explains everything
Milky lime water, green dichromate and low pH are all caused by SO₂. CO₂ cannot turn dichromate green, so 'both' is not needed — the 2021 key is SO₂.
Leaving a reactant out of the sum
Every reactant counts, including the reagent that ends up in the by-product. For ethanol from chloroethane and KOH the denominator is 64.5 + 56 = 120.5, giving 38.17%. (The 2025 paper prints '6 g KOH', a misprint for 56.)
Nanochemistry: Dimensions, Sol–Gel Synthesis and Characterisation
Learn this subtopic in the notesClassifying Nanostructures by Dimension
Sol–Gel Synthesis and the Characterisation Techniques
Common traps
Nano-rings as one-dimensional
A ring looks like a bent wire, but the textbook lists nano-rings with quantum dots as zero-dimensional.
Drying as the last step
Drying of the gel comes before the final dehydration, which is the last step the paper asks for.
More MHT-CET Chemistry formula sheets
- Alcohols, Phenols and Ethers
- Aldehydes, Ketones and Carboxylic Acids
- Alkanes
- Alkenes
- Amines
- Basic Principles of Organic Chemistry
- Biomolecules
- Chemical Bonding and Molecular Structure
- Chemical Kinetics
- Chemical Thermodynamics and Energetics
- Coordination Compounds
- Electrochemistry
- Elements of Group 16, 17 and 18
- Halogen Derivatives of Alkanes
- Introduction to Polymer Chemistry
- Ionic Equilibria
- Redox Reactions
- Solid State
- Solutions and Colligative Properties
- Some Basic Concepts of Chemistry
- States of Matter
- Structure of Atom
- Surface Chemistry
- Transition and Inner Transition Elements