CBSE Class 12 Chemistry General Organic Chemistry Notes and Questions

Read and download the CBSE Class 12 Chemistry General Organic Chemistry Notes and Questions for the 2025-26 academic session. We have provided comprehensive Class 12 Chemistry school assignments that have important solved questions and answers for General Organic Chemistry. These resources have been carefuly prepared by expert teachers as per the latest NCERT, CBSE, and KVS syllabus guidelines.

Solved Assignment for Class 12 Chemistry General Organic Chemistry

Practicing these Class 12 Chemistry problems daily is must to improve your conceptual understanding and score better marks in school examinations. These printable assignments are a perfect assessment tool for General Organic Chemistry, covering both basic and advanced level questions to help you get more marks in exams.

General Organic Chemistry Class 12 Solved Questions and Answers

 

Important Points :
 
1. The chemical substances in the earth’s crust obtained by mining are called Minerals.
 
2. Minerals, which act as source for metal, are called Ore. From ore metal can be obtained economically .
 
3. The unwanted impurities present in ore are called Gangue.
 
4. The entire process of extraction of metal from its ore is called Metallurgy.
 
5. Removal of gangue from ore is called Concentration, Dressing or Benefaction of ore.
 
6. Concentration by Hydraulic washing is based on the difference in gravities of ore and gangue particles.
 
7. Concentration by Magnetic separation is based on differences in magnetic properties of ore components. If either of ore or gangue is capable of attracted by a magnet field, then such separation is carried out.
 
8. Concentration by Froth Flotation Process is based on the facts that sulphide ore is wetted by oil & gangue particles are wetted by water.
 
9. Concentration by Leaching is based on the facts that ore is soluble in some suitable reagent & gangue is insoluble in same reagent. e.g. Bauxite ore contains impurities of silica, iron oxide & TiO2 .The powdered ore is treated with NaOH which dissolve Al & impurities remains insoluble in it.
Al2O3 +2NaOH + 3 H2O ——→2 Na [Al(OH)4].
10. Calcination involves heating of ore in absence of air below melting point of metal. In this process volatile impurities escapes leaving behind metal oxide.
Fe2O3.xH2O——→ Fe2O3 +xH2O
ZnCO3 ——→ ZnO +CO2
CaCO3.MgCO3  ——→CaO + MgO + 2CO2
11. Roasting involves heating of ore in presence of air below melting point of metal in reverberatory furnace. In this process volatile impurities escapes leaving behind metal oxide and metal sulphide converts to metal oxide.
 
 POINTS TO BE REMEMBERED

1. DRUGS – Drugs are chemical of low molecular masses, which interact with macromolecular targets and produce a biological response.

2. CHEMOTHERAPY- The use of chemicals for therapeutic effect is called chemotherapy.

3. CLASSIFICATION OF DRUGS –

(a) ON THE BASIS OF PHARMACOLOGICAL EFFECT-drugs for a particular type of problem as analgesics-----for pain relieving.

(b) ON THE BASIS OF DRUG ACTION-Action of drug on a particular biochemical process.
 
(c) ON THE BASIS OF CHEMICAL ACTION-Drugs having similar structure .eg-sulpha drugs.

(d) ON THE BASIS OF MOLECULAR TARGETS- Drugs interacting with biomolecules as lipids, proteins.

4. ENZYMES AS DRUG TARGETS

(i) CATALYTIC ACTION OF EN ZYMES-
 
(a) Enzymes have active sites which hold the substrate molecule .it can be attracted by reacting molecules.

(b) Substrate is bonded to active sites through hydrogen bonds, ionic bonds, Vander Waal or dipole –dipole interactions.

(ii) DRUG- ENZYME INTERACTIONS-

(a)Drug complete with natural substrate for their attachments on the active sites of enzymes .They are called competitive inhibitors.

(b)Some drugs binds to a different site of the enzyme called allosteric sites which changes the shape of active sites.

5. ANTAGONISTS- The drugs that bind to the receptor site and inhibit its natural function.

6. AGONISTS-Drugs mimic the natural messenger by switching on the receptor.
 

Please click on below link to download pdf file for CBSE Class 12 Chemistry General Organic Chemistry Notes and Questions

Unit 08 Aldehydes, Ketones and Carboxylic Acids
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CBSE Class 12 Chemistry Surface Chemistry Assignment Set B
CBSE Class 12 Chemistry Solid State Assignment Set B
CBSE Class 12 Chemistry Solid State Important Questions and Answers
CBSE Class 12 Chemistry Surface Chemistry Notes and Questions
CBSE Class 12 Chemistry Polymers Notes and Questions
CBSE Class 12 Chemistry P Block Elements II Important Questions and Answers
CBSE Class 12 Chemistry P Block Elements I Important Questions and Answers
CBSE Class 12 Chemistry Metallurgy Important Questions and Answers
CBSE Class 12 Chemistry The p Block Elements Questions
CBSE Class 12 Chemistry General Principles Process of Isolation of Elements Questions
CBSE Class 12 Chemistry Chemistry in Everyday Life Assignment
CBSE Class 12 Chemistry Chemistry in Everyday Life Questions
CBSE Class 12 Chemistry Surface Chemistry Questions
CBSE Class 12 Chemistry Surface Chemistry Assignment Set A
CBSE Class 12 Chemistry General Organic Chemistry Notes and Questions
CBSE Class 12 Chemistry Chemistry in Everyday Life Notes and Questions
CBSE Class 12 Chemistry Solid State Questions
CBSE Class 12 Chemistry Solid State Assignment Set A
CBSE Class 12 Chemistry Polymers Questions
CBSE Class 12 Chemistry Polymers Assignment
CBSE Class 12 Chemistry Organic Chemistry Questions
CBSE Class 12 Chemistry General Principles and Process of Isolation of Elements Notes and Questions
CBSE Class 12 Chemistry General Principles Process of Isolation of Elements Assignment Set A

CBSE Class 12 Chemistry General Organic Chemistry Assignment

Access the latest General Organic Chemistry assignments designed as per the current CBSE syllabus for Class 12. We have included all question types, including MCQs, short answer questions, and long-form problems relating to General Organic Chemistry. You can easily download these assignments in PDF format for free. Our expert teachers have carefully looked at previous year exam patterns and have made sure that these questions help you prepare properly for your upcoming school tests.

Benefits of solving Assignments for General Organic Chemistry

Practicing these Class 12 Chemistry assignments has many advantages for you:

  • Better Exam Scores: Regular practice will help you to understand General Organic Chemistry properly and  you will be able to answer exam questions correctly.
  • Latest Exam Pattern: All questions are aligned as per the latest CBSE sample papers and marking schemes.
  • Huge Variety of Questions: These General Organic Chemistry sets include Case Studies, objective questions, and various descriptive problems with answers.
  • Time Management: Solving these General Organic Chemistry test papers daily will improve your speed and accuracy.

How to solve Chemistry General Organic Chemistry Assignments effectively?

  1. Read the Chapter First: Start with the NCERT book for Class 12 Chemistry before attempting the assignment.
  2. Self-Assessment: Try solving the General Organic Chemistry questions by yourself and then check the solutions provided by us.
  3. Use Supporting Material: Refer to our Revision Notes and Class 12 worksheets if you get stuck on any topic.
  4. Track Mistakes: Maintain a notebook for tricky concepts and revise them using our online MCQ tests.

Best Practices for Class 12 Chemistry Preparation

For the best results, solve one assignment for General Organic Chemistry on daily basis. Using a timer while practicing will further improve your problem-solving skills and prepare you for the actual CBSE exam.

Where can I download the latest CBSE Class 12 Chemistry Chapter General Organic Chemistry assignments?

You can download free PDF assignments for Class 12 Chemistry Chapter General Organic Chemistry from StudiesToday.com. These practice sheets have been updated for the 2025-26 session covering all concepts from latest NCERT textbook.

Do these Chemistry Chapter General Organic Chemistry assignments include solved questions?

Yes, our teachers have given solutions for all questions in the Class 12 Chemistry Chapter General Organic Chemistry assignments. This will help you to understand step-by-step methodology to get full marks in school tests and exams.

Are the assignments for Class 12 Chemistry Chapter General Organic Chemistry based on the 2026 exam pattern?

Yes. These assignments are designed as per the latest CBSE syllabus for 2026. We have included huge variety of question formats such as MCQs, Case-study based questions and important diagram-based problems found in Chapter General Organic Chemistry.

How can practicing Chapter General Organic Chemistry assignments help in Chemistry preparation?

Practicing topicw wise assignments will help Class 12 students understand every sub-topic of Chapter General Organic Chemistry. Daily practice will improve speed, accuracy and answering competency-based questions.

Can I download Chemistry Chapter General Organic Chemistry assignments for free on mobile?

Yes, all printable assignments for Class 12 Chemistry Chapter General Organic Chemistry are available for free download in mobile-friendly PDF format.