CBSE Class 12 Chemistry General Organic Chemistry Notes and Questions

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Explore structured practice materials through the CBSE Class 12 Chemistry General Organic Chemistry Notes and Questions. Tailored for Class 12 learners, utilizing these Chemistry assignments ensures thorough preparation and strengthens foundational knowledge before final CBSE evaluations.

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View or download the dedicated CBSE Class 12 Chemistry General Organic Chemistry Notes and Questions resource below. Engaging with these assignments under focused study conditions ensures continuous academic progress and mastery of the 2026-27 curriculum.

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.
 

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CBSE Class 12 Chemistry Assignments for General Organic Chemistry

Chapter Practice Questions for Class 12 Chemistry

Explore reliable practice questions for General Organic Chemistry tailored for Class 12 learners. Use these structured worksheets to evaluate preparedness and strengthen core problem-solving skills.

Key Advantages of Solving General Organic Chemistry Assignments

  • Exam Alignment: Questions strictly follow contemporary CBSE sample papers and grading schemes.
  • Comprehensive Coverage: Features objective drills, case studies, and structured descriptive problems for General Organic Chemistry.
  • Pacing & Precision: Regular problem-solving builds critical calculation speed and test-taking accuracy.

How to Approach Chemistry General Organic Chemistry Assignments

  1. Concept Foundation: Review the NCERT book for Class 12 Chemistry thoroughly before diving into assignment tasks.
  2. Self-Evaluation: Solve exercises independently before inspecting professional answer guides.
  3. Progress Monitoring: Note down complex formulas or concepts, clearing them up using available online practice aids.

FAQs

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

You can download free PDF assignments for Class 12 Chemistry General Organic Chemistry from StudiesToday.com. These practice sheets have been updated for the 2026-27 session covering all concepts from latest NCERT textbook.

Do these Chemistry General Organic Chemistry assignments include solved questions?

Yes, our teachers have given solutions for all questions in the Class 12 Chemistry 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 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 General Organic Chemistry.

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

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

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