Chapter 6 Chemistry Answer Key

[Spencer Prather]

Studentscan access the chapter-wise solutions on this page from the links provided below. NCERT Solutions for Class 12 Chemistry Chapter 2 PDF Download option can be used by the students while learning the chapters from the textbook. NCERT Solutions Class 12 Chemistry (specific chapter) can be downloaded by clicking the links which are provided below.

NCERT Solutions Class 12 Chemistry is an important subject as it contains many chemical reactions and problems which are of more marks when it comes to exams. Scoring good marks in this subject is possible only if students learn the chapters on a regular basis. Even numericals are present in the chapters, so noting down the important formulas and understanding the method of solving them is an important step here. The NCERT Solutions contain an explanation for each reaction so that it will be easier for the students while preparing for the exams. Students will also be able to revise the chapters and recall them easily while answering the complex questions in the exam.

Rate of a reaction (average and instantaneous), factors affecting rates of reaction: concentration, temperature, catalyst; order and molecularity of a reaction; rate law and specific rate constant, integrated rate equations and half life (only for zero and first order reactions); concept of collision theory (elementary idea, no mathematical treatment).

Surface chemistry deals with important features like catalysis, adsorption and colloids which comprises gel and emulsion. After going through this chapter, students will understand the interfacial phenomenon and its significance, adsorption and its classification, mechanism of adsorption and the factors controlling adsorption. Further solving the textbook questions along with previous year question papers will boost the exam preparation of CBSE students.

The elements which are lying between the s and p-block elements are called as d-block or transition elements. The inner transition series are called as f-block elements. This chapter introduces concepts such as the general properties of transition elements, variation in ionic and atomic size of transition metals, physical properties, ionization enthalpies, magnetic properties and oxidation states. Students will get a clear idea about the electronic configuration, general characteristics and properties of important compounds in this chapter.

Coordination compounds: Introduction, ligands, coordination number, colour, magnetic properties and shapes, IUPAC nomenclature of mononuclear coordination compounds, bonding; isomerism, importance of coordination compounds (in qualitative analysis, extraction of metals and biological systems).

The halogen derivatives of hydrocarbons are called haloalkanes. They are classified based on the number of hydrogen atoms present in them. The aromatic compounds in which the halogens are attached directly to the carbon atom of the aromatic ring are called haloarenes. In this chapter, students will also get an idea about the methods of preparation, chemical and physical properties and the organohalogen compounds uses. The reactions involved in the preparation of haloarenes and haloalkanes are explained clearly in this chapter to help students perform well in the exams.

The classification of alcohols and phenols are based on the number of -OH groups present. Compounds which have one -OH group are called monohydride alcohols and phenols. The compounds which have two, three or more -OH groups are called dihydric, trihydric or polyhydric alcohols and phenols. Students will study about the reactions involved in the process of making alcohols from phenols, alcohols and ethers. It will also help students to learn about the physical properties of alcohols, phenols and ethers.

In organic chemistry, aldehydes, ketones and carboxylic acids are of utmost importance. Aldehydes and Ketones can be obtained by the hydration of alkynes, ozonolysis of alkenes and by the oxidation of alcohols. Carboxylic acids can be obtained by the oxidation of aldehydes or primary alcohols. This chapter is very important and carries more marks in the board exam. For this purpose, students have to learn all the concepts and revise them on a regular basis for a good score.

Aldehydes and Ketones: Nomenclature, nature of carbonyl group, methods of preparation, physical and chemical properties, and mechanism of nucleophilic addition, reactivity of alpha hydrogen in aldehydes; uses.

Carboxylic Acids: Nomenclature, acidic nature, methods of preparation, physical and chemical properties; uses.

The derivatives of ammonia are amines which are obtained by the replacement of hydrogen. From this chapter, students will be able to understand the nomenclature, structure and properties of amines. Amines are an important organic compound which contains nitrogen. Numerous examples of determining the basicity of amines, the reaction and synthesis of amines are explained briefly in this chapter. Students will obtain a good hold on these concepts by answering the questions present at the end of the chapter.

Amines: Nomenclature, classification, structure, methods of preparation, physical and chemical properties, uses, and identification of primary, secondary and tertiary amines.

Cyanides and Isocyanides will be mentioned at relevant places in context.

Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry

The organic compounds which are present as essential constituents in different cells of the living organism are called biomolecules. These include proteins, carbohydrates, vitamins, enzymes and nucleic acids. The interaction of biomolecules constitute the molecular logic of life processes. Simple molecules such as mineral salts and vitamins play an important role in the function of organisms. The structure and functions of the biomolecules are covered in this chapter as per the latest CBSE guidelines.

Class 12 is a crucial stage in the life of a student. To help them grasp all the concepts effectively, the CBSE board has divided the entire course into sections having marks according to the exam pattern. All the chapters are divided based on the marks weightage and importance from the CBSE exams perspective. The purpose of doing this is to provide a quality education for Class 12 students and help them achieve their future goals. It also provides a strong foundation of basic concepts which are important for the exams.

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