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Minor Chemistry Sem 3 Bsc Important Questions 2025 #physicalchemistry #organicchemistry #fyugp #vbu

Hey Guys
I hope you will be all fine.
So there's a video in which I provide you the important questions from physical chemistry -1 and organic chemistry -2

chapters :-

0:00 Intro
0:32 Chemical Energetics
1:53 Chemical Equilibrium
2:43 Ionic Equilibrium
4:08 Aromatic Hydrocarbons
5:10 Alkyl and Aryl halides
6:25 Alcohols and Phenols
6:30 Alcohols
7:28 Phenols
8:12 Tips


The syllabus of these are as follows:

Section A: Physical Chemistry-1

1. Chemical Energetics:
Review of thermodynamics and the Laws of Thermodynamics, Important principles and
limitations of thermochemistry. Concept of standard state and standard enthalpies of
formations, integral and differential enthalpies of solution and dilution. Calculation of bond
energy, bond dissociation energy and resonance energy from thermochemical data. Variation of enthalpy of a reaction with temperature-Kirchhoff’s equation.

2. Chemical Equilibrium:
Free energy change in a chemical reaction. Thermodynamic derivation of the law of chemical equilibrium. Distinction between G and G0, Le Chatelier’s principle. Relationships between Kp, KC and Kx for reactions involving ideal gases.

3. Ionic Equilibria:
Strong, moderate and weak electrolytes, degree of ionization, factors affecting degree of ionization, ionization constant ionic product to water, lionization of weak acids and bases, PH for different types of salts solutions and buffer solutions. Solubility and solubility product of sparingly soluble salts – applications of solubility product principle.

Section B: Organic Chemistry-2

Functional group approach for the following reactions (preparations & reactions) to be
studied in context to their structure.

1. Aromatic hydrocarbons
Preparation (case benzene): from phenol, by decarboxylation, from acetylene, from
benzene sulphonic acid.
Reactions: (Case benzene): electrophilic substitution: nitration, halogenation and
sulphonation. Friedel-Craft’s reaction (alkylation and acylation) (up to 4 carbons on
benzene). Side chain oxidation of alkyl benzene (up to 4 carbons on benzene).

2. Alkyl and Aryl Halides

a) Alkyl Halides (up to 5 Carbons) Types of nucleophile Substitution (SN1, SN2 and
SNi) reactions. Preparation: from alkenes and alcohols.Reactions: hydrolysis, nitrite & nitro formation, nitrile & isonitrile formation.
Williamson’s ether synthesis: Elimination vs substitution.

b) Aryl Halides: Preparation: (Chloro, bromo and iodo-benzene case): from phenol, Sandmeyer & Gattermann reactions.
Reactions: (Chlorobenzene): Aromatic nucleophilic substitution (replacement
by –OH group) and effect of nitro substituent. Benzyne Mechanism: KNH2/NH3
(or NaNH2/NH3).

3. Alcohols and Phenols (up to 5 Carbons)

a) Alcohols: Preparation: Preparation of 10, 20,and 30 alcohols: using Grignard
reagent, Ester hydrolysis, Reduction of aldehydes, ketones, carboxylic acid and
esters.Reactions: with sodium, HX (Lucas test), esterification, oxidation (with PCC, alk.
KMnO4, acidic dichromate, conc. HNO3). Oppeneauer oxidation) oxidation of
diols(up to 6 Carbons), Pinacol-Pinacolone rearrangement.

b) Phenols: (Phenol case) Preparation: Cumene hydroperoxide method, from
diazonium salts. Reactions: Electrophilic substitution: Nitration, halogenation
and sulphonation. Reimer-Tiemann Reaction, Gattermann-Koch Reaction,
Houben-Hoesch Condensation, Schotten-Baumann Reaction.


📜 Declaration:

The important questions provided here are intended solely for study and knowledge enhancement purposes. They are meant to help you prepare effectively for your exams, but there is no guarantee that these exact questions will appear in the examination.

We do not claim that these questions will be asked in the exam.
Their purpose is to support your understanding and revision of the syllabus.

Consistent study and complete syllabus preparation are essential for success.


📜 Declaration:

यहाँ दिए गए सभी महत्वपूर्ण प्रश्न केवल अध्ययन और ज्ञान बढ़ाने के उद्देश्य से दिए गए हैं। ये प्रश्न आपके परीक्षा की तैयारी में सहायता कर सकते हैं, लेकिन यह निश्चित नहीं है कि यही प्रश्न परीक्षा में आएंगे।
हम यह दावा नहीं करते कि ये प्रश्न परीक्षा में अवश्य पूछे ही जाएंगे।
इनका उद्देश्य सिर्फ आपकी समझ को बेहतर बनाना और पाठ्यक्रम का अभ्यास कराना है।

सफलता के लिए निरंतर अध्ययन और संपूर्ण पाठ्यक्रम की तैयारी ज़रूरी है।

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from Nep Bsc

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