CBSE Class 12 Chemistry General Organic Chemistry Notes and Questions

Read and download free pdf of CBSE Class 12 Chemistry General Organic Chemistry Notes and Questions. Get printable school Assignments for Class 12 Chemistry. Class 12 students should practise questions and answers given here for General Organic Chemistry Chemistry in Class 12 which will help them to strengthen their understanding of all important topics. Students should also download free pdf of Printable Worksheets for Class 12 Chemistry prepared as per the latest books and syllabus issued by NCERT, CBSE, KVS and do problems daily to score better marks in tests and examinations

Assignment for Class 12 Chemistry General Organic Chemistry

Class 12 Chemistry students should refer to the following printable assignment in Pdf for General Organic Chemistry in Class 12. This test paper with questions and answers for Class 12 Chemistry will be very useful for exams and help you to score good marks

General Organic Chemistry Class 12 Chemistry Assignment

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 12 Aldehydes, Ketones and Carboxylic Acids
CBSE Class 12 Chemistry Aldehydes Ketons Carboxylic Acids Questions

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CBSE Class 12 Chemistry General Organic Chemistry Assignment

We hope you liked the above assignment for General Organic Chemistry which has been designed as per the latest syllabus for Class 12 Chemistry released by CBSE. Students of Class 12 should download and practice the above Assignments for Class 12 Chemistry regularly. We have provided all types of questions like MCQs, short answer questions, objective questions and long answer questions in the Class 12 Chemistry practice sheet in Pdf. All questions have been designed for Chemistry by looking into the pattern of problems asked in previous year examinations. 

Assignment for Chemistry CBSE Class 12 General Organic Chemistry

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General Organic Chemistry Assignment Chemistry CBSE Class 12

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General Organic Chemistry Assignment CBSE Class 12 Chemistry

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CBSE Chemistry Class 12 General Organic Chemistry Assignment

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The General Organic Chemistry Class 12 Chemistry Assignments have been designed based on latest CBSE syllabus for Class 12 Chemistry issued for the current academic year

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