Class 12 Chemistry target paper 2025
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Class XII "Chemistry"
Target paper 2025
Section "A"
(Multiple choice questions)
NOTE: This section consists of 17 part questions and all are to be answered. Each part question carries one mark.
Chap #1 (Chemistry of Representative Elements)
Short: unique behavior of beryllium Describe group trend of ionization energy and melting and boiling point?
Long: Describe the manufacture of sulfuric acid by contact process and show that by equation it act as an oxidizing agent and dehydrating agent?
Chap #2 (Chemistry of outer transition elements)
Short: Write IUPAC names of the following complexes: Why transition elements have the tendency to form alloy? Write the name of three alloys of transition element along with their compositions?
Long: Describe any three of the following properties of d block elements: Magnetic properties, variable oxidation state catalytic properties, formation of colour?
OR
Describe the extraction of 99.99% copper from roasted pyrite ore?
Chap #3 (Organic Compounds)
Define the following:
Functional group
Bucky Balls
Refining of Petroleum
Short: How is coal produced under the earth crust? Write the name of four types of coaland mention the age of carbon content in them?
Long: Characteristics of organic compounds?
Chap #4 (Nomenclature of organic compounds)
Short: Write IUPAC names of the following. (Nomenclature)
Chap #5 (Introduction to Hydrocarbons)
Short: Define electrophile. Give step wise mechanism of following reaction of benzene: chlorination, sulphonation, nitration.
Draw and explain the orbital structure of ethene and ethyne. Give two methods of its preparation?
How does benzene give electrophilic substitution reaction? Give two reaction in which benzene ring is not retained?
Differentiate between Ortho para directors and meta director?
Long: Describe the molecular orbital structure of benzene also Define Kekule structure of benzene?
OR
What is mean by isomerism? Explain four different types of structural isomers and give one example of each?
Chap #6 (Alkyl Halides & Amines)
Short: what are Alkyl halides? Classify them with one example of each?
Why do first alkyl halides give SN2 mechanism while third alkyl halide give SN1 mechanism? Why are alkyl amines basic in nature?
How a primary alkyl amine is converted into secondary and tertiary amine? Give the equation.
Long: what is nucleophilic substitution reaction? Explain the reaction mechanism of SN1 and SN2 with example?
Chap #7 (Alcohol phenols and ethers)
Chap #8 (Carbonyl compounds 1: Aldehydes and ketones)
Chap #9 (Carbonyl compounds II: carboxylic acid and functional derivatives)
Chap 10 (Biochemistry)
Short: what do plant and animal starch means? What is the role of animal starch for energy storage in the body? Long: What are proteins? Classify various types of proteins on the basis of their function?
OR
How we can explain primary, secondary and tertiary & quaternary structure of proteins. Explain importance of protein?
Chap #11 (Industrial chemistry)
Short: write notes on the following:
Fertilizer industries
Detergent industries
Long: what is pharmaceutical industry? Explain the classification of pharmaceutical products?
Chap #12 (Environmental Chemistry)
Short: Write the name of four segments of atmosphere adventure in which segment we live?
What is global warming & greenhouse gases?
Long: What is greenhouse effect? How does human activities contributes to the enhancement of the greenhouse effect?
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