Maharashtra HSC Chemistry
Section A: 1-Mark Questions
1. n-Type Semiconductors: Questions about the formation of n-type semiconductors by doping silicon with pentavalent impurities have appeared in multiple exams, notably in 2018 and 2021.
2. Coordination Number in BCC Structure: The coordination number in a body-centered cubic structure has been queried in 2017 and 2020.
3. Ferromagnetic Substances: Identifying substances that can be permanently magnetized has been a topic in 2016 and 2019.
4. Rate Constant Units for Zero-Order Reactions: Questions on the units of the rate constant for zero-order reactions have appeared in 2015 and 2018.
5. EDTA as a Ligand: The use of EDTA in estimating water hardness has been questioned in 2017 and 2021.
6. Terylene as a Polymer: Identifying Terylene as a polyester has been asked in 2016 and 2019.
7. Hypotonic Solutions: Questions about the osmotic pressure of hypotonic solutions have appeared in 2018 and 2020.
8. Oxidation State of Xenon in XeOF₂: Determining the oxidation state of xenon in XeOF₂ has been queried in 2017 and 2021.
9. Denaturation of Proteins: Understanding what denaturation refers to in proteins has been a topic in 2015 and 2019.
10. Magnetic Moment with 5 Unpaired Electrons: Calculating the magnetic moment for a complex with five unpaired electrons has appeared in 2016 and 2020.
Section B: 2-Mark Questions
1. Common Ion Effect: Explaining the common ion effect with examples has been asked in 2018 and 2021.
2. Osmotic Pressure Definition and Units: Defining osmotic pressure and stating its units have appeared in 2017 and 2020.
3. Role of Salt Bridge in Electrochemical Cells: The necessity of a salt bridge in electrochemical cells has been questioned in 2016 and 2019.
4. Order vs. Molecularity of Reactions: Differentiating between order and molecularity has been a topic in 2015 and 2018.
5. IUPAC Naming of Coordination Compounds: Writing the IUPAC name for compounds like [Co(NH₃)₄Cl₂]Cl has appeared in 2017 and 2021.
6. Geometrical Isomerism: Explaining geometrical isomerism with examples has been asked in 2016 and 2019.
7. Pseudo-First-Order Reactions: Describing pseudo-first-order reactions with examples has appeared in 2018 and 2020.
8. pH Calculations of Mixed Solutions: Calculating the pH of solutions formed by mixing acids and bases has been a topic in 2017 and 2021.
Section C: 3-Mark Questions
1. Nernst Equation Derivation and Significance: Deriving the Nernst equation and explaining its significance has been questioned in 2016 and 2019.
2. Le Chatelier’s Principle in the Haber Process: Applying Le Chatelier’s principle to the Haber process has appeared in 2015 and 2018.
3. SN1 and SN2 Mechanisms: Describing the mechanisms of nucleophilic substitution reactions (SN1 and SN2) has been asked in 2017 and 2020.
4. Half-Life Calculations for First-Order Reactions: Calculating the half-life of first-order reactions has appeared in 2016 and 2019.
5. Effect of Non-Volatile Solutes on Vapour Pressure: Explaining how the addition of non-volatile solutes affects vapour pressure has been a topic in 2018 and 2021.
6. Bakelite: Reactions and Uses: Writing the reaction for the formation of Bakelite and discussing its uses has been questioned in 2017 and 2020.
7. Colligative Properties and Freezing Point Depression: Explaining colligative properties with reference to freezing point depression has appeared in 2016 and 2019.
8. Structure and Function of Hemoglobin: Describing hemoglobin as a coordination compound has been asked in 2015 and 2018.
Section D: 4-Mark Questions
1. Gibbs-Helmholtz Equation Derivation and Applications: Deriving the Gibbs-Helmholtz equation and discussing its applications has appeared in 2017 and 2020.
2. Electrolytic Refining of Copper: Explaining the process of electrolytic refining of copper with diagrams has been a topic in 2016 and 2019.
3. Preparation, Properties, and Uses of KMnO₄: Discussing the preparation, properties, and uses of potassium permanganate has been questioned in 2015 and 2018.
4. Electrophilic Substitution Mechanism in Benzene: Describing the mechanism of electro
philic substitution in benzene, such as nitration or sulphonation, has appeared in 2017 and 2020.
